... the increase of AC and DC double-use functions Our company is the leader in Rolling Door Opener industry. We are chief ... ,ISO2000:2008OEM,ODMYESWARRANTY1 YEARAC MOTOR INCLUDEMOTOR,PUSH BUTTON,LOCK BOX,BRACKET SYSTEMAC MOTOR CONTROL SYSTEM20 PICS ONE CARTONAC MOTOR ... SYSTEM,BACKUP BATTERY, BRACKET SYSTEMAC&DC MOTOR OPTIONALPUSH BUTTON,LOCK BOX, INFRARED SENSOR, ALARM SYSTEM.AC&DC MOTOR LOAD CAPACITY420 ...