Keyswitch won’t work, now it does! Easy hookup to make any regular switch or relay compatible to a Liftmaster, Chamberlain, Craftsman,  Security+ 2.0 MyQ operator with yellow learn button and antenna. Velcro Interface on the side of operator and wire, easily identified on unit. This is considered one wired wall controll no mater how many you connect to it. Some operators have a limit of wired wall controlls make sure you are not at that limit.