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LiftMaster´s solid-steel drive screw is maintenance-free.
Encased in a wear-resistant channel that eliminates
metal-to-metal contact for longer drive mechanism life and quiet
operation, it never needs lubrication - ever! This garage door
opener is also equipped with a Motor Vibration Isolation System®
(MVIS)...a revolutionary "floating motor" design that eliminates
powerhead vibration, resulting in smooth, quiet performance.
For greater security, our screw drive openers include Security+®
rolling code technology. Each time the remote is activated,
Security+ automatically rolls the code over to any one of
100-billion new codes, never to be repeated. We also include
PosiLockTM, a patented LiftMaster feature. With PosiLock, once
your garage door goes down, it is securely locked and an
intruder cannot gain entry by forcing your garage door open.
For safe operation, every model is equipped with the Protector
System®, which projects an invisible light beam across the
inside of the garage door opening. If anything interrupts the
beam while the door is going down, the door automatically
reverses before making contact. |
