1)Garage door motor are using 220V or 380V AC power supply; 2)can be opened and closed by the power-driven operation; 3)which can be matched with manually lock button and security locking; 4)be controlled remotely from far away; the itinerary up and down is controlled by the limit switch for automatically under control; 5)undivded unable-broken chain design, opening and closing with security; 6)In blackouts, the manual operation can be used and save the effort; 7)Operations are stable, low noise, small vibration.