The B970 is an ultra quiet, super strong and durable steel-reinforced belt drive garage door opener engineered with smart technology to help you manage activities and simplify your life. Built to withstand extreme conditions, it’s constructed with anti-vibration technology and precision engineered for years of reliability and smooth performance—perfect for attached garages. Powered by Chamberlain’s Lift Power System, it delivers the maximum lifting capacity in the category. Built-in Wi-Fi and the MyQ App allow you to get real-time alerts, open, close, and know the status of your garage door—from anywhere. Designed and engineered for safety and security, the B970 includes a full-function wall control panel, a wireless keypad, and features enhanced Triband technology for superior range, performance, and less interference. The highest level of encryption and monitoring, paired with your home’s ISP and Wi-Fi router firewalls guard against hacking. Battery backup keeps the unit working even when the power is out. Accepts two 100-watt max non-halogen or 26-watt max CFL light bulbs (not included). Designed specifically for 7 ft. garage doors – extension kits required for 8 ft. and 10 ft. doors.