1/2HP 115V 1Ph Sectional w/CPS-U Commercial Monitored Photo Eye, Medium Duty Hoists, For high or vertical lift sectional doors or small rolling doors and grilles, Medium-Duty Logic programmable integrated circuit board, High starting torque motor with overload protection, Emergency Chain Hoist with electric interlock, Adjustable friction clutch, Solenoid brake standard, Built in 315 MHz Receiver for Security +2.0 & DIP switch remotes.