LiftMaster 371LM One-Button Visor 315MHz Security+ Garage Door Or Gate Opener Remote Control. Directly compatible with Chamberlain 950D, 953D or Sears Craftsman 139.53752 139.53753 18190 18191. Works with LiftMaster, Chamberlain, Sears Craftsman Security+ versions of garage door openers on the 315MHz frequency manufactured between 2005 and 2011 that have the Purple learn button. Works with LiftMaster Security+ radio receivers on the 315MHz frequency.
Not compatible with the Security+ 390MHz openers manufactured from 1997-2004 or the Security+2.0 openers manufactured since 2005.

LiftMaster 373LM three-Button Visor 315MHz Security+ Garage Door Or Gate Opener Remote Control. Directly compatible with Chamberlain 950D, 953D or Sears Craftsman 139.53752 139.53753 18190 18191. Works with LiftMaster, Chamberlain, Sears Craftsman Security+ versions of garage door openers on the 315MHz frequency manufactured between 2005 and 2011 that have the Purple learn button. Works with LiftMaster Security+ radio receivers on the 315MHz frequency.
Not compatible with the Security+ 390MHz openers manufactured from 1997-2004 or the Security+2.0 openers manufactured since 2005.