Sears Craftsman 139.53310 Remote is Equivalent to the 61LM Equivalent to the Sears Craftsman 139 model number listed above Dip switches inside the battery compartment match up with your existing remote Also has a set of dip switches on the overhead opener itself if you no longer have a working remote Operates on a 390 MHZ Frequency, and works on models from 1984-1992 12V battery and visor clip are included along with instructions