Trueboarder 139.53615SR Remote is Equivalent to the 61LM

Equivalent to the 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