1. Industrial door operator is applied widely to factory building and garage. 2. Disengage the release handle, release the door from the door operator immediately. 3. In the event of power failure, an emergency hand chain allows you to operate the door manually. 4. Remote control: hopping code technology prevents guessing your remote code. 5. Mechanical limit switch: it adopts two limit cams, make the operator more safe and reliability. 6. Auto brake system: it has auto brake system in motor and can achieve braking fast and stop accurately. 7. Control box: open, close, stop three buttons control the door separately. The control system is fitted with wiring terminals for infrared photocell, lamp, etc., 8. Emergency stop: press the emergency stop button on the control box can cut off the power of control unit immediately on emergent occasion and protect people and machines.