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.