The 61LM LiftMaster 1-button remote is compatible with various LiftMaster, Chamberlain, Sears, Craftsman, and Raynor garage door operators and radio receivers. Once one 61LM remote is programmed to the radio receiver, the code from that programmed remote can be duplicated in additional remotes by matching the 9 programming DIP switches inside the remote.
This item has been discontinued. A compatible replacement is the Stinger 390LMD21V remote.
The 61LM Liftmaster remote along with the 61RGD Raynor remote were discontinued. The Stinger 390LMD21V Remote can be found here: 61RGD Raynor Replacement Remote / Stinger 390LMD21V Remote and can be used as a replacement.
You can watch a programming video here for the new Stinger remote.