... capacity and durable than other motors6) make dimension of Electric Rolling Door Motor bracket system according to your request, ... have functions: infrared sensor, ups, rebound automatic when meet obstacle, alarm function, lighting and so on…8) our Electric Rolling Door ... BATTERY, BRACKET SYSTEMAC&DC MOTOR OPTIONALPUSH BUTTON,LOCK BOX, INFRARED SENSOR, ALARM SYSTEM.AC&DC MOTOR LOAD CAPACITY420-450 ...