110V /220VAC china high quality liftmaster garage door opener        specification: Power supply: 110V /220VAC 50Hz; Motor Voltage:24VDC; Lighting Bulb:10W/24V; Consumption in Stand-by: ≤10W; Protection Class:IP20; Ambient Temperature:-20oC~55oC; Operation Speed:12cm/s; Radio Frequency:433.92MHz; Motor output torque:8N.m; Max lift height:2.5m; Max square metre:9m2          Function Introduction: 1. Automatically reverse safety system. 2. Force sensing systems constantly adapt to compensate for minor  changes in door load from weather and door age.
3. Soft start and soft stop -smooth and quiet opening and closing.
4. One button remote control with step by step control mode.
5. Computerised precision travel limit.
6. Selectable Auto-closing function.
7. A manual release function allows easy manual operation in event of power failure.
8. Optional safety beam sensors (recommended) stop the door before contact with an obstruction.
9. Suitable for tilt-up and sectional overhead doors.
10. System uses magnetic sensor for maximum reliability in dusty  conditions.   
11. High-torque low-rpm motor mounted in a unique C-chassis for quieter running.
12. Auto Courtesy light.
13. All settings retained even after power loss. 
14. 5 levels Adjustable Force.
15. Over load protection.       Standard installation layout:     About us
Bisen Smart Access Co.,Ltd was established in 1999, Located in Nanchang Minying Science & Technology Park, Nanchang city, China. The production area is 40,000 square metres. We are the biggest Professional manufacturer for Gate and Door Automatic Operators in China. More than 50 experienced engineers are engaged in R & D,and more than 500 staffs are working in manufacture and service. We can provide quality ODM/OEM service for customers in the world. Our main products:Auto-barrier gate,Garage door opener,Roll up door opener, Swing gate opener, Sliding gate opener, Industrial sectional door opener,Anti-terrorism Road Blocker,Hydraulic Bollard,Pedestrian Gate,etc.