Automatic Safety Reverse/Automatic Door Stop: Reverses door automatically if obstructed when going down, stops if obstructed when going up. The Protector System®: Non-impact infrared safety reversing device senses obstructions and automatically reverses the door's direction without making contact. Motor: High-torque, industrial, 1/2 H.P., 115V, single-phase motor with instant reverse and automatic reset thermal overload. "I-Beam" Trolley Track: Industrial-strength, heavy-duty steel "I-Beam" configuration for increased rigidity for 8', 10' and 12' door heights. Full #48 chain drive. Pushbutton Station: Momentary contact to open and close. Manual Release with Auto-Reconnect Trolley: Manual release in case of power failure. When power is restored, a push of the button automatically reconnects the door and operator. Security Light: Turns garage door opener lights on automatically when The Protector System beam is broken. Equipped with PosiLockTM: When the garage door is down, it's securely locked. If an intruder tries to force the door open, the opener automatically reactivates to the closed position. Rolling Code Technology: The ATS is equipped with a Security+® Rolling Code Receiver: With every activation, Security+ transmits a brand new code, one of over 100 billion codes, never to be repeated. The ATS Security+ operator can accommodate up to eight Security+ remote controls as well as one Security+ Keyless Entry System. Ideal for multiple drivers. (Remote controls are not included.) LiftMaster offers optional Remote Controls and Keyless Entry System with Security+ Anti-Burglary Coding. | 
