1.garage door opener/motor 2.especially proper for the door whose area is 7~10sqm 3.made in China Technical specificationssupply voltage: AC220V 50HZmotor output torque: 6N•m/8N•mremote distance: ≥20mopening and closing speed: 80mm/sneeded instrument when installingelectric percussion drill, electric hand drill, herringbone ladder, adjustable spanner, fixed spanner, socket spanner ,tapeline, ...