... 2002, and mainly manufacture garage door openers, rolling door openers, sliding gate openers and door components.100% of our products are for ... : -20°C~55°C RELATIVE HUMIDITY: <90% MOTOR SPEC:Motor Type Permanent Magnet D.C. Motor Voltage24V DC Torque150 kg.cm at 4 ... door opener,Garage door operator,sectional door operator,automatic door motor