Mini Key Chain Garage Door Opener Remote for Liftmaster 971LM 973LM (1997-2005 Red Button)
Brand: TCK TECH
Color: Red Learn
Replacement aftermarket key chain remote compatible with the following part numbers:

Chamberlain:950CB, 953CB, 956CB, or keyless entry 940CB

Liftmaster:970LM, 971LM, 972LM, 973LM,974LM, or keyless entry 976LM

Sears/Craftsman: 139.53681 or 139.53680
STOP! Make sure your opener has a red/orange learn button before purchasing
for openers manufactured from 6/1997 and 8/2005 with a RED/ORANGE learn button
See pictures for help locating your "programming learn button"
Convenient keychain style
See description for a list of compatible part numbers