If the railing of the garage door is not put down, please cut off the power supply.

1. Power failure: If there is a problem with the power supply of the gate, such as the power supply line is interrupted and the power plug is not plugged tightly, the gate rod will not work.

2. Mechanical failure: It may also be a problem with the mechanical part of the brake handle, such as the brake handle being stuck, broken, motor failure, etc. These problems will prevent the brake lever from falling.

3. Control system failure: The failure of sensors, switches, cables and other components in the road brake control system will also lead to the failure of the road brake lever.