Wirelessly connect dry contact relays and aftermarket smart garage door controller to up to three Security+ 2.0 LiftMaster, Chamberlain or Craftsman openers with yellow “learn” button.
Most of the garage door openers work with a wired doorbell-type buttons that momentarily connect the two wires. This makes it easy to interface them with the smart garage door controllers such as Garadget (see how it works). A small number of LiftMaster, Chamberlain and Craftsman openers use a proprietary communication protocol and do not support a simple button control. It is however still possible to control them externally by using a native remote as an adapter.
We offer a wired Security+ 2.0 adapter, but sometimes the controller is too far from garage door opener making wiring impractical or opener’s bus is already heavily loaded and adding another wired controller makes opener act erratically. This adapter utilizes a native LiftMaster 891LM wireless controller and allows independent control of up to 3 garage door openers from multiple dry contact relays.
- Follow the standard pairing instructions for the wireless remote to associate its individual buttons with the door openers.
- Test the buttons on the remote and ensure that they operate the doors. The existing wall buttons and remotes should also continue to work.
- Connect speaker wire pairs to separate Garadget’s blue terminals or other dry contact relays in your installation. The polarity of these connections is not important.
- Use Garadget app or your home automation software to test the remote commands for each of the doors.