We are one of the largest gargage door operator company in china, we have achieved certificates of CE and ISO9001, and we are applying for UL certificate. If you choose us, you will get: The best quality products The best service The most competitive price Technical parameter: Rated voltage: 220v/110v Frequency : 50Hz/60Hz Pull and push force: 1200N Rated output torque: 12N*M Lighting power: 25w Max. speed: 120mm/s Track model G21 G24 G27 G30 Track length 2900mm 3200mm 3500mm 3800mm Lift height 2100mm 2400mm 2700mm 3000mm Technical Features Soft start/stop Accurate positioning and adjusting Super quiet Running Automatic lighting Photo Eyes Connection / infrared ray protection Digital display Error Recognition Menu guide operation Memory Protection for power cut Automatic Error Recovery Rolling Code Remote Control Anti-thieft joint Storage battery joint