Compatible with the following models:

• Liftmaster 91LM, 92LM, 96LM, 970LM, 972LM, 973LM and 974LM
• Chamberlain 950CB, 953CB, 956CB
• Sears 139.53681, 139.53680
• Compatible with Security+ systems with Amber learn button, including Chamberlain, Sears, Craftsman and Raynor code rolling residential openers (Safety Signal)
• Replaces transmitter model G971AC for Access Master garage door openers.
• Also compatible with wireless keypad model number 976LM (same as model 940CB, 139.53684)
• Compatible with Liftmaster garage door opener model numbers 1240R, 1245R, 1246R, 1255R, 1256R, 1265, 1280R, 1000SDR, 2000SDR, 1245 GMR, 1255GMR, 985, 2265, 2565, 1280R, 2280, 2580, 2220, 2110, ATS211R, 2500
• Compatible with Chamberlain garage door opener model numbers 1200, 2200, 4200, 6200, 7220, CG40, CG40, PD210, PD610, PD612K, 7320, 8200, 9200, 4620, 4640, 9902, PD420, PD460-2, 9950
• Compatible with Security+ garage opener receiver model numbers 335LM, 535LM, 412HM, 635LM

Specifications

• 390 MHZ Frequency, over 100 billion codes with code rotating technology (Security+)
• 1 channel/button transmitter, compatible with models manufactured from 1997-2005
• Visor clip and Lithium battery (5 years life w/normal use) included

Rolling Code Programming with LiftMaster Operator:

Liftmaster 971LM Programming Instructions