INCLUDES TWO (2) 3-BUTTON REMOTES, ONE (1) DUAL-FUNCTION WALL CONTROL PANEL, AND SAFETY SENSORS
Quality designed and precision engineered to run smoothly, with a Chamberlain garage door opener, you get reliability, easy installation and dependable operation, all at an affordable price. Perfect for attached garages, the B503 will give you years of smooth, quiet performance you can sleep through. Powered by Chamberlain’s Lift Power System™, it delivers the highest lifting capacity equivalent to the ½ power class.