Product Review

The B503 is an ultra quiet and strong steel reinforced belt drive garage door opener that’s easy to install and operate. Perfect for attached garages, it’s precision engineered for years of reliability and quiet, smooth performance you can sleep through. Powered by Chamberlain’s Lift Power System, it delivers the highest lifting capacity compared to the ½ power class. Designed and engineered for safety and security, it features enhanced Triband frequency technology for superior range and performance, Security+2.0code encryption, Posi lock protection against forced entry, dual function wall control, and more. Unit accepts two 100 watt max non halogen or 26 watt CFL light bulbs (not included). Designed specifically for 7 ft. garage doors extension kits required for 8 ft. and 10 ft. doors. Receive alerts and open or close your garage door on your smartphone, Set a recurring schedule to close your garage door or turn your lights on/off.