2. Compatible with the Liftmaster Chamberlain 890max garage door opener key fob remote control

Only compatible with LiftMaster, Chamberlain, and Sears Craftsman bottle openers (models from 1993 to present) equipped with purple, red/orange, yellow, and green smart/learning buttons (see photos before purchase). Compatible bottle opener models: 1345, 1355, 1356, 3220, 3240, 3255, 3265, 3266, 3267, 3270, 3280, 3500, 3585, 3595, 3800, 3850, 8165, 8365, 83666, 8367, 8500, 8550W, etc. (Not compatible with DIP switch systems or Genie/ceiling/linear door openers). Genuine 4-button remote control compatible with up to 4 different garage door openers, door operators, and/or accessories, featuring the most advanced encryption technologies: Security+ 315 MHz and 390 MHz, Billion Code 390 MHz, and Security+ 2.0 310/315/390 MHz (MyQ rolling code). A sliding cover protects the remote from accidental pressure on pockets or wallets. Integrated LED indicator for transmission and low battery. State-of-the-art RF technology ensures optimal range. Compact, lightweight, and easy to carry thanks to its keychain format. Simple programming instructions and a pre-installed CR2032 battery.