General description The Chamberlain Liftmaster Craftsman 893LM 893Max Garage Door Remote Control is designed for compatibility with Sears Craftsman Lift Master Chamberlain brand door openers manufactured since 1993 that feature a smart learn button in purple, red, orange, yellow, or green. This remote offers a convenient solution for controlling multiple garage doors without the need for additional wiring or receivers. Technical specifications Compatibility: Sears Craftsman Lift Master Chamberlain door openers (1993 and later) Control: Up to 3 garage door openers simultaneously Working range: 120 feet Technology: Security+ 2.0 and Rolling Code Usage Easy to program with wireless universal garage door opener programming Eliminates the need for multiple remotes