Before purchase, please check your garage door openerThis aftermarket replacement remote ONLY works with Purple, Red or Orange Learn Button Button LiftMaster / Chamberlain / Sears Craftsman / Raynor / AccessMaster brand garage door opener (hanging in your garage) made around 1997-2014 that features Security 315 MHz or 390 MHz technology.Or you can check if your remote control's model number is listed belowSecurity 315 MHz (Purple learn button openers) remotes model belowLiftMaster: 355LM, 365LM, 370LM, 371LM, 371LMC, 372LM, 372LMC, 373LM, 373LMC, 373P, 373W, 374LM, 374LMC, 376LM, 377LM, 377LMC, 378LM, 398LM and 41A6127-1 Chamberlain: 41A6318, 940D, 940CD, 950D, 950CD, 953D, 953CD, 956D, 956CD Sears Craftsman: 139.18191, 139.18192, 139.53752, 139.53753, 139.53754 AccessMaster: 371AC, 373AC and 377LG Do It: 940DID and 953DID Raynor: 371RGD, 372RGD, 373RGD, 373PRGD and 377LGSecurity 390MHz (Red or orange learn button openers) remotes model belowLiftMaster: 91LM, 92LM, 94LM, 96LM, 970LM, 971LM, 972LM, 973LM, 973W, 974LM Chamberlain: 950CB, 953CB, 956CB Sears Craftsman: 139.53680, 139.53681, 139.53684, 00953680000, 00953681000AGAIN MAKE SURE your garage door remote is listed above or your opener has a purple, red or orange learn button BECAUSE OTHERWISE IT WILL NOT WORK - THIS REMOTE IS NOT UNIVERSAL.Typical battery life is 2 years under average operating conditions when using Energizer, Sony, Duracell, Panasonic, Maxell or similar brands battery. Not applicable to factory pre-installed battery, which is provided for trial purpose only.