This Lift Master 61LM is a compatible replacement for your Chamberlain 750CB remote that can control one garage door or gate opener that use the 8 or 9 dip switch style remotes made between 1984 and 1992.  Can also work on openers that have the WHITE, YELLOW, or GREY learn buttons made during this same time.  Programming this Chamberlain 750CB compatible remote is simple just set the switches to match the radio receiver or your current remote control and you are ready to go.

LiftMaster 61LM, 63LM and 64LM
Chamberlain 750CB, 753CB, and 756CB 
Sears Craftsman 139.5100, 139.5300, 139.53100, 139.53106, 139.53110, 139.53200, 139.532006, 139.53210, 139.53300, 139.533006, 139.53310, 139.53315, 139.53400, 139.53403, 139.53413, 139.53500, 139.535006, 139.53510, 139.53513, 139.53515, 139.53600, 139.536006, 139.53601, 139.53602, 139.53603, 139.536036, 139.53604, 139.53605, 139.53606, 139.53607, 139.53608, 139.53609, 139.53610, 139.53611, 139.53612, 139.53613, 139.53622, 139.53632, 139.53707, 139.53708, 139.53718, 139.53758, 139.53778, 139.5225SRT, 139.53225SRT, 139.53315SR, 139.53415SR, 139.53515SR, 139.53614SR, 139.53615SR, 139.53618SR, 139.53619SR, 139.53625SR, 139.53626SR, 139.53639SR, 139.53651SR, 139.53699SR
True Guard models from 1984-1992 with 8 or 9 dip switches and 390 MHz frequency 
Crawford 61CD
Master Mechanic 61MM

Product Features:
-390 MHz Frequency 
-Controls 1 garage door or gate opener
-Easy to program using dip 9 switches located inside the unit
-Includes visor clip, 12-volt battery, and programming instructions
-Dimensions: 3.5 x 1.6 x 0.6 inches
-One year manufacturer warranty

PROGRAMMING INSTRUCTIONS