> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wuji.tech/llms.txt
> Use this file to discover all available pages before exploring further.

# User Notice

<Info>
  Before using Wuji Hand 2, read these safety notices carefully to ensure safe operation and personal safety.
</Info>

<Warning>
  Improper operation can damage the device or cause injury. Follow the safety rules below strictly.
</Warning>

## Power Safety

**Power requirement**: 12 V DC

<Warning>
  Wuji Hand 2.1 (Beta) supports only 12 V. Connect exactly 12 V. Other voltages aren't compatible. The voltage range will change in later versions—leave room in your integration design.
</Warning>

**Power adapter**:

* Use the official power adapter (12 V 20 A).
* If you replace it, the output must be 12 V, with a rated power of at least 200 W recommended.

**Wiring rules**:

* Before wiring, check the XT30 power connector for looseness, oxidation, or damage.
* Confirm polarity before wiring. Never reverse-connect.
* Never plug or unplug power or communication cables while Wuji Hand 2 is running.

**Power-down and storage**:

* Power off the device when it isn't in use.
* Before disconnecting power, stop motion and confirm the hand is at rest.

**During firmware upgrade**:

* Don't disconnect power or unplug cables during an upgrade. Wait until the upgrade finishes before doing anything else.

## Mechanical Operation Safety

* **Pinch and injury prevention**: Never reach toward or bring your body near Wuji Hand 2 while it moves. Take care to avoid pinch injuries.
* **Drop prevention**: Prevent drops during handling, placement, or operation. A drop can damage structural parts, joints, and internal components.
* **Parameter safety**: Before changing default motion parameters, make sure it's safe, to avoid accidental injury.
* **Valuables**: Don't grasp fragile or high-value objects, to avoid losses.
* **Collaborative use**: Prevent collisions when working with robot arms or other equipment.
* **Workspace safety**: Keep the workspace clear of fragile, flammable, or other hazardous items.

## Environmental Requirements

* **Operating temperature**: Use at room temperature (15–30 ℃).
* **Over-temperature protection**: Wuji Hand 2 has thermal protection.
* **Water and dust**: Use the hand only in a dry, clean environment. Keep out liquids, oil mist, and dust.
* **Ventilation**: Leave enough space around Wuji Hand 2 for heat dissipation.
* **Magnetic protection**: Keep the joint areas away from metal or magnetic objects to avoid encoder interference or magnet damage.

<Warning>
  The housing heats up at high temperatures. Don't touch it, to avoid burns.
</Warning>

## Cable and Flex-Cable Protection

* **Flex-cable protection**: The flex cables on the finger surface are fragile. Always keep the soft pad / skin fitted during use, and avoid scratching, squeezing, or impact.
* **Cable routing**: Avoid pulling and sharp bends. Leave slack and keep cables away from sharp edges, heat sources, and moving parts.
* **Connector protection**: Pull data cables along their axis. Don't lift or pull them sideways, to avoid connector damage.


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