... and manual. 3.Overheat protection system. Features of High Speed Garage Door Motor1. Press the garage door’s button operation ... . Garage door self-respect whereabouts process can play speed limit protection (constant speed function).7. Motor starting torque, overload ability. ... demand of market. Widely used in supermaket, warehoue,garage,post,bank,factory etc.. It not only effects on anti-theft ...