Model Variants
==============

The Go2 series is available in three distinct models — **AIR**, **PRO**, and **EDU**.  
Below is a comparative specification table for each model:

+---------------------------------+----------------------+----------------------+----------------------+
| Model                           | AIR                  | PRO                  | EDU                  |
+=================================+======================+======================+======================+
|  **Mechanical Specifications**  |                      |                      |                      |
+---------------------------------+----------------------+----------------------+----------------------+
| Dimension (Standing)            | 70cm x 31cm x 40cm   | 70cm x 31cm x 40cm   | 70cm x 31cm x 40cm   |
+---------------------------------+----------------------+----------------------+----------------------+
| Dimension (Crouching)           | 76cm x 31cm x 20cm   | 76cm x 31cm x 20cm   | 76cm x 31cm x 20cm   |
+---------------------------------+----------------------+----------------------+----------------------+
| Weight (with battery)           | ≈15kg                | ≈15kg                | ≈15kg                |
+---------------------------------+----------------------+----------------------+----------------------+
| Material                        | Aluminium alloy +    | Aluminium alloy +    | Aluminium alloy +    |
|                                 | High-strength        | High-strength        | High-strength        |
|                                 | engineering plastic  | engineering plastic  | engineering plastic  |
+---------------------------------+----------------------+----------------------+----------------------+
| **Electronic Parameters**       |                      |                      |                      |
+---------------------------------+----------------------+----------------------+----------------------+
| Voltage                         | 28V–33.6V            | 28V–33.6V            | 28V–33.6V            |
+---------------------------------+----------------------+----------------------+----------------------+
| Max Working Power               | ≈3000W               | ≈3000W               | ≈3000W               |
+---------------------------------+----------------------+----------------------+----------------------+
|  **Performance Parameters**     |                      |                      |                      |
+---------------------------------+----------------------+----------------------+----------------------+
| Payload                         | ≈7kg (Max 10kg)      | ≈8kg (Max 10kg)      | ≈8kg (Max 12kg)      |
+---------------------------------+----------------------+----------------------+----------------------+
| Speed                           | 0–2.5 m/s (Max 5m/s) | 0–3.5 m/s (Max 5m/s) | 0–3.7 m/s (Max 5m/s) |
+---------------------------------+----------------------+----------------------+----------------------+
| Max Climb Drop Height           | ≈15cm                | ≈16cm                | ≈16cm                |
+---------------------------------+----------------------+----------------------+----------------------+
| Max Climb Angle                 | 30°                  | 40°                  | 40°                  |
+---------------------------------+----------------------+----------------------+----------------------+
| Computing Power                 | —                    | 8-core High-perf CPU | 8-core High-perf CPU |
+---------------------------------+----------------------+----------------------+----------------------+
|  **Knee Joint Parameters**      |                      |                      |                      |
+---------------------------------+----------------------+----------------------+----------------------+
| Max Joint Torque                | —                    | ≈45N·m               | ≈45N·m               |
+---------------------------------+----------------------+----------------------+----------------------+
| Knee Motors                     | 12 sets              | 12 sets              | 12 sets              |
+---------------------------------+----------------------+----------------------+----------------------+
| Range of Motion                 | Body: -48° ~ 48°     | Body: -48° ~ 48°     | Body: -48° ~ 48°     |
|                                 | Thigh: -200° ~ 90°   | Thigh: -200° ~ 90°   | Thigh: -200° ~ 90°   |
|                                 | Shank: -156° ~ -48°  | Shank: -156° ~ -48°  | Shank: -156° ~ -48°  |
+---------------------------------+----------------------+----------------------+----------------------+
| Intra-joint Circuit             | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Heat Pipe Cooler                | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
|  **Sensors**                    |                      |                      |                      |
+---------------------------------+----------------------+----------------------+----------------------+
| 3D LiDAR (Wide-angle)           | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Wireless Position Module        | —                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| HD Wide-angle Camera            | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Foot-end Force Sensor           | —                    | —                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
|  **Features**                   |                      |                      |                      |
+---------------------------------+----------------------+----------------------+----------------------+
| Basic Actions                   | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Auto-scaling Strap              | —                    | √                    | —                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Intelligent OTA Upgrade         | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| RTT 2.0 Pictures                | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Graphical Programming           | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Front Lamp (3W)                 | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Wi-Fi 6 Dual Band               | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Bluetooth 5.2/4.2/2.1           | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| 4G Module                       | —                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Voice Function                  | —                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| ISS 2.0 Side-follow             | —                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Obstacle Detection              | √                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Charging Pile Support           | —                    | √                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| Secondary Development           | —                    | —                    | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
|  **Accessories**                |                      |                      |                      |
+---------------------------------+----------------------+----------------------+----------------------+
| Manual Controller               | Optional             | Optional             | √                    |
+---------------------------------+----------------------+----------------------+----------------------+
| High Computing Module           | —                    | —                    | NVIDIA Jetson Orin   |
|                                 |                      |                      | (Optional,40–100Tops)|
+---------------------------------+----------------------+----------------------+----------------------+
| Battery                         | 8000mAh (x1)         | 8000mAh (x1)         | 15000mAh (x1)        |
+---------------------------------+----------------------+----------------------+----------------------+
| Battery Life                    | 1–2h                 | 1–2h                 | 2–4h                 |
+---------------------------------+----------------------+----------------------+----------------------+
| Charger                         | 33.6V 3.5A           | 33.6V 3.5A           | 33.6V 9A (Fast)      |
+---------------------------------+----------------------+----------------------+----------------------+
| Warranty                        | 6 months             | 12 months            | 12 months            |
+---------------------------------+----------------------+----------------------+----------------------+

.. note::

   1. Max joint torque refers to the largest joint motor. Actual torque varies by motor.  
   2. Specifications may vary in different scenarios/configurations. Refer to actual product.  
   3. Voice functions include offline commands, intercom, and media playback.  
   4. For development, refer to the **Secondary Development Manual**.  
   5. Warranty terms: See **Product Warranty Brochure**.  
   6. Non-mainland versions of 4G support 43 European countries and select Asian regions.  

.. tip::

   - Some functions require manual operation or secondary development due to hardware/software limits.  
   - Go2 is a **civilian-use robot**. Avoid unsafe modifications or hazardous use.  
   - Visit the **Unitree Robotics Website** for latest terms, updates, and compliance guidelines.  



Accessories Overview
====================

+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Accessory                          | Description                        | Notes                              | Availability                       | Picture                                               |
+====================================+====================================+====================================+====================================+=======================================================+
| Manual Controller                  | Remote handheld controller         | Optional for AIR & PRO; Standard in| EDU                                | .. image:: media/figures/manual_controller.png        |
|                                    |                                    | EDU                                |                                    |    :width: 50%                                        |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Standard Battery                   | 8000mAh / 236.8Wh                  | ≈2.5kg                             | Default on AIR & PRO               | .. image:: media/figures/battery_standard.png         |
|                                    |                                    |                                    |                                    |    :width: 50%                                        |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Long Endurance Battery             | 15000mAh / 432Wh                   | ≈2.5kg                             | Default on EDU                     | .. image:: media/figures/battery_long.png             |
|                                    |                                    |                                    |                                    |    :width: 50%                                        |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Charger (Standard)                 | 33.6V 3.5A                         | Slow charge ~2h                    | AIR & PRO                          | .. image:: media/figures/charger_standard.png         |
|                                    |                                    |                                    |                                    |    :width: 50%                                        |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Fast Charger                       | 33.6V 9A                           | Fast charge ~1h15                  | EDU + optional upgrade             | .. image:: media/figures/charger_fast.png             |
|                                    |                                    |                                    |                                    |    :width:  50%                                       |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Foot End Sensor                    | Mounted on foot ends               | Provides advanced force detection  | EDU only                           | .. image:: media/figures/foot_end_sensor.png          |
|                                    |                                    |                                    |                                    |    :width:  50%                                       |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Charging Pile                      | Dock-type charging pile            | Supports auto-charging             | PRO & EDU                          | .. image:: media/figures/charging_pile.png            |
|                                    |                                    |                                    |                                    |    :width:  50%                                       |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Expansion Dock (Orin Nano 8GB)     | High-performance module            | Up to 40 TOPs computing power      | Optional                           | .. image:: media/figures/expansion_dock_orin_nano.png |
|                                    |                                    |                                    |                                    |    :width:  50%                                       |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Expansion Dock (Orin NX 16GB)      | Advanced high-computing module     | Up to 100 TOPs computing power     | Optional                           | .. image:: media/figures/expansion_dock_orin_nx.png   |
|                                    |                                    |                                    |                                    |    :width:  50%                                       |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Dual Cameras                       | 106mm × 25mm × 41mm                | Weight ≈108g, 3W power             | Optional                           | .. image:: media/figures/dual_cameras.png             |
|                                    |                                    |                                    |                                    |    :width:  50%                                       |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Depth Camera (Intel D435i)         | 124mm × 29mm × 26mm                | 1280×720@30fps, 848×480@90fps      | Optional                           | .. image:: media/figures/depth_camera_d435i.png       |
|                                    |                                    |                                    |                                    |    :width:  50%                                       |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| 3D Navigation Radar (MID-360)      | 65mm × 65mm × 60mm                 | Horizontal FOV 360° / Vertical 59° | Optional                           | .. image:: media/figures/radar_mid360.png             |
|                                    |                                    |                                    |                                    |    :width:  50%                                       |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| 3D Navigation Radar (Hesai XT16)   | Ø100–103mm × 76mm                  | Horizontal 360° / Vertical 30°     | Optional                           | .. image:: media/figures/radar_hesai_xt16.png         |
|                                    |                                    |                                    |                                    |    :width:  50%                                       |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Small Servo Arm (D1 / D1-550)      | Robotic manipulator arm            | 6 DOF + claw clamp                 | Optional                           | .. image:: media/figures/servo_arm.png                |
|                                    |                                    |                                    |                                    |    :width:  50%                                       |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+
| Protective Bracket (Small)         | Support fixture                    | Provides hardware protection       | Optional                           | .. image:: media/figures/protective_bracket.png       |
|                                    |                                    |                                    |                                    |    :width:  50%                                       |
+------------------------------------+------------------------------------+------------------------------------+------------------------------------+-------------------------------------------------------+


Hardware Architecture
=====================

.. image:: media/figures/hardware_architecture.png
    :alt: Go2 Hardware Architecture
    :width: 100%
    :align: center

|


Hardware
--------

.. image:: media/figures/hardware_1.png
    :alt: Go2 Hardware View 1
    :width: 100%
    :align: center

|

.. image:: media/figures/hardware_2.png
    :alt: Go2 Hardware View 2
    :width: 100%
    :align: center

|


Back Load Installation Hole
===========================

.. note::
   The installation holes are designed for standard M4 screws and units are in millimeters (mm).

.. image:: media/figures/installation_holes_1.png
    :alt: Go2 Installation Holes
    :width: 100%
    :align: center

|


Electrical Interface
====================

.. image:: media/figures/electrical_interface.png
    :alt: Go2 Electrical Interface
    :width: 100%
    :align: center

|


Power Interface
---------------

**DC 28.8V output**  
Connected to Orin NX 8/16GB high computing power module BAT input.

|


Ethernet Interface
------------------

**Standard RJ45 interface**  
Connected to User PC / Orin NX 8/16GB via RJ45 Ethernet.

|


SBUS Interface
--------------

Used for communication connection on a universal remote control.  

⚠️ *This interface does not provide power output.*  

**Interface definition (from left to right):**  
``NC / GND / SBUS``

.. image:: media/figures/electrical_interface_1.png
    :alt: Go2 SBUS Interface
    :width: 30%
    :align: center


Lidar Specifications
====================

The **Unitree 4D LiDAR-L1** is equipped with Unitree’s proprietary **4D radar technology** (3D spatial positioning + 1D grayscale).  
It delivers **high-speed laser ranging** at up to **21,600 samples per second**, providing real-time 3D environmental data.  
This enables advanced **motion-based obstacle avoidance**, ensuring reliable performance across diverse and challenging terrains.

Specifications
--------------

+------------------+--------------------------------+
| **Parameter**    | **Details**                    |
+==================+================================+
| Model            | L1                             |
+------------------+--------------------------------+
| Dimensions       | 75 mm (W) × 75 mm (D) × 65 mm  |
|                  | (H)                            |
+------------------+--------------------------------+
| Supply Voltage   | 12 V DC                        |
+------------------+--------------------------------+
| Laser Wavelength | 905 nm                         |
+------------------+--------------------------------+
| Field of View    | 360° × 90°                     |
+------------------+--------------------------------+

Pilot Lamp Status Indicators
============================

+-----------------------------------------------+--------------------------------------+----------------------------------------------+
| Color                                         | Flashing / State                     | Meaning                                      |
+===============================================+======================================+==============================================+
| .. image:: media/figures/lamp_green.png       | Flashing                             | Switching on                                 |
|    :alt: Go2 4D LiDAR                         |                                      |                                              |
|    :width:  15%                               |                                      |                                              |
+-----------------------------------------------+--------------------------------------+----------------------------------------------+
| .. image:: media/figures/lamp_green_flash.png | Permanently on                       | Powered on, default obstacle avoidance on    |
|    :alt: Go2 4D LiDAR                         |                                      |                                              |
|    :width:  15%                               |                                      |                                              |
+-----------------------------------------------+--------------------------------------+----------------------------------------------+
| .. image:: media/figures/lamp_blue_flash.png  | Permanently on                       | Obstacle avoidance closure                   |
|    :alt: Go2 4D LiDAR                         |                                      |                                              |
|    :width:  15%                               |                                      |                                              |
+-----------------------------------------------+--------------------------------------+----------------------------------------------+
| .. image:: media/figures/lamp_yellow.png      | Permanently on                       | Range mode                                   |
|    :alt: Go2 4D LiDAR                         |                                      |                                              |
|    :width:  15%                               |                                      |                                              |
+-----------------------------------------------+--------------------------------------+----------------------------------------------+
| .. image:: media/figures/lamp_purple.png      | Permanently on                       | Accompanying mode on state                   |
|    :alt: Go2 4D LiDAR                         |                                      |                                              |
|    :width:  15%                               |                                      |                                              |
+-----------------------------------------------+--------------------------------------+----------------------------------------------+
| .. image:: media/figures/lamp_blue_flash.png  | Low flash rate                       | Motor & IMU calibration in progress          |
|    :alt: Go2 4D LiDAR                         |                                      |                                              |
|    :width:  15%                               |                                      |                                              |
+-----------------------------------------------+--------------------------------------+----------------------------------------------+
| .. image:: media/figures/lamp_yellow_flash.png| Low flash rate                       | Low battery warning (crouch down in 10 min)  |
|    :alt: Go2 4D LiDAR                         |                                      |                                              |
|    :width:  15%                               |                                      |                                              |
+-----------------------------------------------+--------------------------------------+----------------------------------------------+
| .. image:: media/figures/lamp_red_flash_l.png | Low flash rate                       | System abnormality, boot/hardware failure    |
|    :alt: Go2 4D LiDAR                         |                                      | → Contact after-sales service                |
|    :width:  15%                               |                                      |                                              |
+-----------------------------------------------+--------------------------------------+----------------------------------------------+
| .. image:: media/figures/lamp_red_flash_h.png | Fast flash rate                      | Motor & IMU calibration failed               |
|    :alt: Go2 4D LiDAR                         |                                      |                                              |
|    :width:  15%                               |                                      |                                              |
+-----------------------------------------------+--------------------------------------+----------------------------------------------+
| .. image:: media/figures/lamp_white.png       | Permanently on                       | Head indicator light                         |
|    :alt: Go2 4D LiDAR                         |                                      |                                              |
|    :width:  15%                               |                                      |                                              |
+-----------------------------------------------+--------------------------------------+----------------------------------------------+

Notes
-----

**Light Priority Modes**

The robot uses a priority-based light indication system:

+--------------------------------------+------------------------------------+
| **Mode**                             | **Light Indicator**                |
+======================================+====================================+
| Companion Mode                       | Purple light (always on)           |
+--------------------------------------+------------------------------------+
| Endurance Mode                       | Yellow light (always on)           |
+--------------------------------------+------------------------------------+
| Obstacle Avoidance Off               | Blue light (always on)             |
+--------------------------------------+------------------------------------+

Camera Specifications
=====================

The onboard camera supports **dual-stream video output** at different resolutions and frame rates:

+-------------------+--------------------------------------------------+
| **Parameter**     | **Details**                                      |
+===================+==================================================+
| Supported Streams | 720p @ 15 fps, 1080p @ 15 fps                    |
+-------------------+--------------------------------------------------+
| Aperture          | F2.2                                             |
+-------------------+--------------------------------------------------+
| Field of View     | 120°                                             |
+-------------------+--------------------------------------------------+
| Transmission      | Real-time HD image transmission via app          |
|                   | (smooth at 720p @ 15 fps in clear environments)  |
+-------------------+--------------------------------------------------+


Joint Serial Number
===================

A quadruped robot functions similarly to an animal, with a **trunk (body)** and four **symmetrical legs** (front and rear).  
The robot’s four legs are grouped into **front** and **rear pairs**, each with a consistent coordinate system and joint range of motion (with slight variations between forelegs and hind legs).

**Leg Numbering:**

+---------+---------------------+
| **Leg** | **Description**     |
+=========+=====================+
| 0       | FR – Front Right    |
+---------+---------------------+
| 1       | FL – Front Left     |
+---------+---------------------+
| 2       | RR – Rear Right     |
+---------+---------------------+
| 3       | RL – Rear Left      |
+---------+---------------------+


**Joint Numbering:**

+---------+---------------------+
| **Joint** | **Description**   |
+===========+===================+
| 0         | Hip (body joint)  |
+-----------+-------------------+
| 1         | Thigh joint       |
+-----------+-------------------+
| 2         | Calf joint        |
+-----------+-------------------+

Example: ``FR_thigh`` = Right Front Leg, Thigh Joint.

Joint Limits
============

**Joint Motion Limits:**

+-------------------+----------------------------------------------+
| **Joint**         | **Range of Motion**                          |
+===================+==============================================+
| Hip (Body Joint)  | -48° ~ +48°                                  |
+-------------------+----------------------------------------------+
| Thigh Joint       | Vertical = 0°                                |
|                   | Forward = Positive                           |
|                   | Hind Legs: -260° ~ +30°                      |
|                   | Forelegs: -200° ~ +90°                       |
+-------------------+----------------------------------------------+
| Calf Joint        | -156° ~ -48°                                 |
+-------------------+----------------------------------------------+

.. image:: media/figures/body_joint_limits.png
    :alt: Go2 4D LiDAR
    :width: 100%
    :align: center

|

Coordinate Sys. & Joint Axes
============================

- **Hip Joint Rotation Axis:** X-axis  
- **Thigh & Calf Joint Rotation Axis:** Y-axis  
- **Rotation Direction:** Positive direction follows the **right-hand rule**

When all joints are set to **zero degrees**:

- Red axis = X-axis  
- Green axis = Y-axis  
- Blue axis = Z-axis  

.. image:: media/figures/joint_axes.png
    :alt: Go2 4D LiDAR
    :width: 100%
    :align: center

|

.. important::

    ⚠️ Note: The calf joint cannot physically reach the zero-degree position due to its mechanical limits. The illustration only represents the **theoretical zero-point reference**.  


Robot Specifications
====================

Dimensions
----------

+-----------------------------------------------+-------------------------+
| **Parameter**                                 | **Specification**       |
+===============================================+=========================+
| Naked machine (standing) – L × W × H          | 70 cm × 31 cm × 40 cm   |
+-----------------------------------------------+-------------------------+
| Naked machine (lying down) – L × W × H        | 76 cm × 31 cm × 20 cm   |
+-----------------------------------------------+-------------------------+
| Net weight (excluding battery)                | ~15 kg                  |
+-----------------------------------------------+-------------------------+
| Degrees of Freedom                            | 12                      |
+-----------------------------------------------+-------------------------+
| Maximum Speed                                 | 3.7 m/s (up to 5 m/s)   |
+-----------------------------------------------+-------------------------+


Environment
-----------

+--------------------------+------------------------------------------+
| **Parameter**            | **Specification**                        |
+==========================+==========================================+
| Operating Temperature    |  5 C ~ 35 C  (optimal in fair weather)   |
+--------------------------+------------------------------------------+
| Slope Tolerance          | ±40°                                     |
+--------------------------+------------------------------------------+
| Maximum Step Height      | 16 cm                                    |
+--------------------------+------------------------------------------+
| Lighting                 | 3 W searchlight                          |
+--------------------------+------------------------------------------+


Battery
-------

+--------------------------+---------------------------+---------------------------+
| **Specification**        | **BT2-05**                | **BT2-06**                |
+==========================+===========================+===========================+
| Weight                   | 2.5 kg                    | 2.5 kg                    |
+--------------------------+---------------------------+---------------------------+
| Capacity                 | 8000 mAh / 236.8 Wh       | 15000 mAh / 432 Wh        |
+--------------------------+---------------------------+---------------------------+
| Rated Voltage            | DC 29.6 V                 | DC 28.8 V                 |
+--------------------------+---------------------------+---------------------------+
| Charging Limit Voltage   | DC 33.6 V                 | DC 33.6 V                 |
+--------------------------+---------------------------+---------------------------+
| Runtime                  | 1 – 2 h                   | 3 – 5 h                   |
+--------------------------+---------------------------+---------------------------+
| Charging Method          | Slow charging             | Fast charging / Docking   |
+--------------------------+---------------------------+---------------------------+
| Charging Current         | 3.5 A                     | 9 A                       |
+--------------------------+---------------------------+---------------------------+
| Charging Duration        | ~2 h                      | ~1 h 15 min               |
+--------------------------+---------------------------+---------------------------+


Internal Systems
----------------

+--------------------------+-------------------------------------------------+
| **Specification**        | **Details**                                     |
+==========================+=================================================+
| Processor                | 8-core processor                                |
+--------------------------+-------------------------------------------------+
| 4G Connectivity          | Built-in patch SIM card                         |
+--------------------------+-------------------------------------------------+
| Wi-Fi                    | Wi-Fi 6 Dual Band Wireless (802.11x)            |
+--------------------------+-------------------------------------------------+
| Bluetooth                | Versions 5.2 / 4.2 / 2.1                        |
+--------------------------+-------------------------------------------------+
| Storage                  | 64 GB                                           |
+--------------------------+-------------------------------------------------+
| Output Power Supply      | DC 28.8 V (battery voltage)                     |
+--------------------------+-------------------------------------------------+
| Connection Port          | RJ45 Ethernet port                              |
+--------------------------+-------------------------------------------------+


Expansion Dock
--------------

+--------------------------+--------------------------+--------------------------+
| **Specification**        | **Orin Nano 8GB**        | **Orin NX 16GB**         |
+==========================+==========================+==========================+
| Power Supply Voltage     | 16–60 V DC               | 16–60 V DC               |
+--------------------------+--------------------------+--------------------------+
| Computing Power          | Up to 40 TOPS            | Up to 100 TOPS           |
+--------------------------+--------------------------+--------------------------+
| Functional Interfaces    | USB 3.0 Type-A ×1        | USB 3.0 Type-A ×1        |
|                          | USB 3.0 Type-C ×1        | USB 3.0 Type-C ×1        |
|                          | USB 2.0 Type-C ×1        | USB 2.0 Type-C ×1        |
|                          | Gigabit Ethernet (RJ45)×2| Gigabit Ethernet (RJ45)×2|
|                          | 100 Mbps Ethernet        | 100 Mbps Ethernet        |
|                          | (GH1.25-4PIN) ×1         | (GH1.25-4PIN) ×1         |
|                          | M8 aviation plug ×1      | M8 aviation plug ×1      |
+--------------------------+--------------------------+--------------------------+


3D Navigation Radar
-------------------

Go2 supports two types of LiDAR (MID-360 and Hesai XT16R), both compatible with SLAM navigation.

+--------------------------+--------------------------+--------------------------+
| **Specification**        | **MID-360**              | **Hesai XT16R**          |
+==========================+==========================+==========================+
| Dimensions               | 65 × 65 × 60 mm          | Ø100.0/103.0 × 76 mm     |
+--------------------------+--------------------------+--------------------------+
| Power Supply Voltage     | 9–27 V DC                | 9–36 V DC                |
+--------------------------+--------------------------+--------------------------+
| Laser Wavelength         | 905 nm                   | 905 nm                   |
+--------------------------+--------------------------+--------------------------+
| Field of View            | Horizontal 360°          | Horizontal 360°          |
|                          | Vertical -7° ~ +52°      | Vertical -15° ~ +15°     |
+--------------------------+--------------------------+--------------------------+


Depth Camera
------------

+--------------------------+------------------------------------------+
| **Specification**        | **D435i**                                |
+==========================+==========================================+
| Size                     | 124 × 29 × 26 mm                         |
+--------------------------+------------------------------------------+
| Minimum Depth Distance   | 0.105 m                                  |
+--------------------------+------------------------------------------+
| Depth Resolution         | 1280 × 720 @ 30 fps                      |
|                          | 848 × 480 @ 90 fps                       |
+--------------------------+------------------------------------------+
| Field of View            | 86° × 57° (±3°)                          |
+--------------------------+------------------------------------------+


Small Servo Arm
---------------

+--------------------------+--------------------------+--------------------------+
| **Specification**        | **D1**                   | **D1-550**               |
+==========================+==========================+==========================+
| Weight                   | ~2.37 kg                 | ~3.15 kg                 |
+--------------------------+--------------------------+--------------------------+
| Degrees of Freedom       | 6 DOF + 1 claw clamp     | 6 DOF + 1 claw clamp     |
+--------------------------+--------------------------+--------------------------+
| Load Capacity            | 500 g (ideal)            | 500 g (incl. clamp)      |
+--------------------------+--------------------------+--------------------------+
| Max Arm Span             | 550 mm (excl. clamp)     | 550 mm (excl. clamp)     |
|                          | 670 mm (incl. clamp)     | 670 mm (incl. clamp)     |
+--------------------------+--------------------------+--------------------------+
| Motor Type               | Servo motor              | Servo motor              |
+--------------------------+--------------------------+--------------------------+
| Working Radius           | —                        | 550 mm                   |
+--------------------------+--------------------------+--------------------------+
| Power Demand             | 24 V 2.5 A (max 5 A)     | 24 V 10 A (15–48 V)      |
+--------------------------+--------------------------+--------------------------+
| Power                    | 60 W                     | 240 W                    |
+--------------------------+--------------------------+--------------------------+
| Controller               | —                        | Integrated (4× Cortex-   |
|                          |                          | A55 @ 1.8 GHz)           |
+--------------------------+--------------------------+--------------------------+
| Communication            | RJ45 (Ethernet)          | RJ45 (Ethernet 100 Mbps) |
|                          |                          | + Type-C (debug)         |
+--------------------------+--------------------------+--------------------------+
| Control Method           | DDS subscription         | DDS subscription         |
+--------------------------+--------------------------+--------------------------+
| Control Cycle            | —                        | 10 Hz                    |
+--------------------------+--------------------------+--------------------------+
| Torque (per joint)       | —                        | J0: 3.3 Nm               |
|                          |                          | J1: 3.3 Nm               |
|                          |                          | J2: 1.7 Nm               |
|                          |                          | J3: 1.7 Nm               |
|                          |                          | J4: 1.7 Nm               |
|                          |                          | J5: 1.7 Nm               |
|                          |                          | J6: 1.7 Nm               |
+--------------------------+--------------------------+--------------------------+
| Joint Motion Range       | J1: ±135°                | J0: ±135°                |
|                          | J2: ±90°                 | J1: ±90°                 |
|                          | J3: ±90°                 | J2: ±90°                 |
|                          | J4: ±135°                | J3: ±135°                |
|                          | J5: ±90°                 | J4: ±90°                 |
|                          | J6: ±135°                | J5: ±135°                |
|                          |                          | Claw: 0–65 mm            |
+--------------------------+--------------------------+--------------------------+


Remote Control with Screen
--------------------------

+--------------------------+------------------------------------------+
| **Specification**        | **Details**                              |
+==========================+==========================================+
| Display                  | 5.5" 1080p HD LCD touchscreen            |
+--------------------------+------------------------------------------+
| System                   | Android 9, 2 GB RAM, 16 GB storage       |
+--------------------------+------------------------------------------+
| Size (antenna retracted) | 189 × 138 × 41 mm                        |
+--------------------------+------------------------------------------+
| Weight                   | 850 g                                    |
+--------------------------+------------------------------------------+
| Battery                  | 10,200 mAh, 7.4 V, 2S Li-ion             |
+--------------------------+------------------------------------------+
| Charging Protocol        | PD 20 W (fast charging)                  |
+--------------------------+------------------------------------------+
| Charging Time            | ~5 h (20 W fast charging)                |
+--------------------------+------------------------------------------+
| Runtime                  | Up to 13 h                               |
+--------------------------+------------------------------------------+
| Functional Interfaces    | HDMI (video out, industry version only)  |
|                          | USB-A (external device / file transfer)  |
|                          | Type-C (charging & transfer)             |
|                          | Firmware upgrade port (GH1.25 4PIN)      |
|                          | SIM card slot                            |
|                          | TF card slot                             |
|                          | Tripod mount (1/4" threaded hole)        |
+--------------------------+------------------------------------------+


Dual Cameras
------------

+--------------------------+------------------------------------------+
| **Specification**        | **Details**                              |
+==========================+==========================================+
| Size                     | 106 × 25 × 41 mm                         |
+--------------------------+------------------------------------------+
| Weight                   | 108 g                                    |
+--------------------------+------------------------------------------+
| Power Consumption        | 3 W                                      |
+--------------------------+------------------------------------------+
| Searchlight Power        | 8 W                                      |
+--------------------------+------------------------------------------+
| Luminous Flux            | 120–140 lm @ 1 W                         |
+--------------------------+------------------------------------------+
| Searchlight Type         | Transparent                              |
+--------------------------+------------------------------------------+


Dual Cameras + Three-in-One Module
----------------------------------

+--------------------------+------------------------------------------+
| **Specification**        | **Details**                              |
+==========================+==========================================+
| Size                     | 270 × 143 × 133 mm                       |
+--------------------------+------------------------------------------+
| Weight                   | 690 g ± 10 g                             |
+--------------------------+------------------------------------------+
| Power Supply Voltage     | 16–60 V DC                               |
+--------------------------+------------------------------------------+
| Brightness               | 3000 lm                                  |
+--------------------------+------------------------------------------+
| Light Output Angle       | 15°                                      |
+--------------------------+------------------------------------------+
| Power                    | Lighting: 30 W                           |
|                          | Speaker: 30 W                            |
|                          | Red/Blue: 10 W                           |
+--------------------------+------------------------------------------+
| Effective Sound Range    | 500 m                                    |
+--------------------------+------------------------------------------+
| Maximum Sound Range      | 800 m                                    |
+--------------------------+------------------------------------------+
| Maximum Sound Pressure   | 130 dB                                   |
+--------------------------+------------------------------------------+
| Audio Formats            | mp3 / wav / m4a / flac / aac             |
+--------------------------+------------------------------------------+
| Control Method           | Remote app                               |
+--------------------------+------------------------------------------+
| Functions                | Real-time shouting                       |
|                          | Audio recording & playback               |
|                          | Text-to-speech                           |
|                          | Voice + lighting control                 |
|                          | Flash / constant light                   |
|                          | Brightness adjustment                    |
|                          | Red/Blue flash & mode switching          |
+--------------------------+------------------------------------------+
