Liftmaster, Craftsman, Chamberlain, Genie, Overhead, ..., Universal Smartphone Garage Door Controller - Control Your Garage Door with Your Phones in 5 Minutes! Easy 5-Minutes installation; No power plugs! No batteries! No complicated wiring! Lifetime free app! Free App for iPhones(iOS8.0 or later) and Android phones(bluetooth4.0 OS4.3 or later). Supports unlimited numbers of phones so all your family members and guests can use it! Guaranteed,or $ BACK,to work with all major brands (new & OLD) openers (EXCEPT those marked "MyQ") Highly secure to use because of the AES128 protection and bidirectional authentication.