Smart garage door opener comers with built-in myq technology to keep you connected and protected: open, close and know the status of your garage door from anywhere with a smartphone with the myq app; battery backup - ensures safe replacement ins-and-outs even during power failures; ultra-quiet and strong belt drive - steel-reinforced belt drive and constructed with high-grade materials for years of reliability and quiet, smooth performance - perfect for attached garages; powered by Chamberlain's MAX lift power system, the B970 delivers lifting force equivalent to 1-1/4 HP, the highest lifting capacity in the category for superior performance in extreme conditions; 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 feet for a quicker entrance and exit; the B970 features anti-vibration technology to deliver years of smooth, ultra quiet performance you can sleep through. Accepts two 100-watt max non-halogen or 26-watt max CFL light bulbs (not included). Designed specifically for 7' garage doors - extension kits required for 8' and 10' doors.