Rebound and Burglar Alarm rolling door motor is our patent product. The patented No: ZL201521094794.9; ZL201720739880.3; ZL201720112892.3. It is manufactured based on the request of DB 35T 1111-2011. Meanwhile, add 2 functions. The first one, if the something comes under the door, the shutter will get reverse automatically. Second, if the door is leveraged, the motor will keep burglar alarm.When the door body encountered obstacles, the weight of the door will be suppressed in the obstruction, door's pieces running blocked, resulting in sprocket and motor has a speed difference, which touched the resistance, rebound mechanism, so that the door shut down and alarm rebound rise. Thus, the motor will protect the pressed objects and door to minimize damage.This shutter motor has a protective route device. When the door in the lower limit of the state closed, and the door affected by others or leveraging, the device will trigger an alarm to warn others.