High Quality NEW!!! 3 IN STOCK!!! $15 EACH Dimensions: 8.4 x 6.1 x 2.4 cm Weight: 70 g Three CHANNELS: Three buttons, able to control 3 different garage doors with one remote PURPLE LEARN BUTTON ONLY: Works with standard Chamberlain, LiftMaster, Craftsman garage opener that have a purple learn button on the back. Compatible with: Security+ 315 MHz Liftmaster, Chamberlain, Craftsman garage door openers manufactured between 2006 and 2014 MODELS: Liftmaster openers: 1345, 1355, 1356, 3220, 3255, 3240, 3265, 3270, 3280, 3800, 3500, 3850, 3585, 3595. Craftsman: HBW2028. Liftmaster/Craftsman remote model: 370LM 371LM 372LM 373LM 950D 953D 956D 139.18191, 139.18192, 139.53752, 139.53753, 139.53754. Chamberlain remote model: 41A6318, 940D, 940CD, 950D, 950CD, 953D, 953CD, 956D, 956CD.