PowerMaster Model APT is made to be used on sectional doors with requiring high cycles and quiet operation appropriate for apartment house applications. Model APT has a heavy duty v-belt and chain reduction and is mechanically self locking. It has a 115vac flexible mount and a PSC motor with full overload protection. PowerMaster Model APT has an adjustable torque limiting clutch with a drawbar disconnect allowing for manual operation. It has a grey powder coat finish and is available in 1/2hp, 115vac and included is a three button station.