To prevent electric shock or the door from being opened. The working voltage of the lock intelligent power-off controller supplying power to the electric rolling shutter door is 220V V V. The controller is a hook lock fitting of the rolling shutter door, which can effectively isolate high-voltage electrical signals, prevent electric shock or the door from being opened, and make the product more safe and reliable. That is, when the door is closed and locked, the two hooks of the ground hook lock extend out at the same time, hook the underground groove, trigger the travel switch in the square groove, and the motor is powered off; Open it with the key, the lock hook retracts, the travel switch in the square groove pops up immediately, and it is normally energized.