The Keychain Garage Door Remote offers portable control with the highest level of security. Featuring a three-button design, this compact remote controls up to three garage door openers individually. Easily programmed and compatible with nearly every garage door opener made by Chamberlain(TM), LiftMaster(TM) and Craftsman(TM), it's the easy option for adding an extra remote for family members who walk, bike or prefer a compact solution.