The Keychain Garage Door Remote offers portable control with Security .0, the highest level of encryption. Featuring a three-button design, this compact remote controls up to three garage door openers individually. Compatible with nearly every garage door opener made by Chamberlain, LiftMaster and Craftsman, built from 1993 to present. (Any Chamberlain opener with Safety Sensors). It's the easy option for adding an extra remote for family members who walk, bike or prefer a compact solution. More control: extreme 1,500 ft. range allows you to operate a garage door opener, gate openers, MyQ Light Accessory or commercial door openers, all from the security of the drivers seat for no waiting roll-in access. Easy setup: wireless programming means no cutting into garage wiring or installation of an unsightly receiver. Additional assurance with 1-year warranty. 1.33 In. W. x 2.49 In. H. x 0.50 In. D..