1. Anti-collision design. 2. Power-off lock preserve function. 3. Motor 90s time protection. 4.LED fault display. 5.Anti-clamping function. 6. Auto close: adjust time from 1-120 seconds. 7. Motor force adjustment: the working force of motor is adjustable. 8. Motor resistance adjustment: the resistance of motor is adjustable. 9. Motor max starting torque: the starting torque is adjustable. 10. Soft starting: motor can slowly start and stop, stable working and no inertia. 11.Adjust slow speed for push force:adjust the force for slow stop and start. 12.Single and four keys: Interchange of single and four keys. 13.High security: control sensitively,control long distance, strong anti-interference.