1. Limit protection device, avoid exceeding the set height when the platform rises to ensure vehicle safety.

2. The emergency power-off safety device, to cut off the power in case of safety problems during use to prevent equipment failure. Continue to operate to ensure the safety of equipment and vehicles.

3. Undervoltage, phase loss, overcurrent and overload protection device. The control circuit can automatically detect the undervoltage and reverse phase of the power supply, and prohibit the operation of the equipment, so as to ensure the safety of the whole equipment. (optional)