Liftmaster 821LMB Universal Smartphone Garage Door Controller
- Smart garage door opener comes with built-in myQ technology to keep you connected and protected: Open, close, your garage door even when the power is....
- Battery backup: Ensures safe replacement ins-and-outs even during power failures. Radio Frequencies: 310, 315, 390. Soft Start / Stop : Yes.
- Ultra-quiet and strong belt drive: Steel-reinforced belt drive and constructed with high-grade materials for years of reliability and quiet, smooth....
- Powered by Chamberlain’s Max Lift Power System, the B970 delivers lifting force equivalent to 1 1 by 4 HP, the highest lifting capacity in the....
- Superior range: Includes 2 3-button remote controls that let you control up to 3 openers. Exclusive Triband technology boosts remote range up to 1,500....