2 replacement for liftmaster chamberlain craftsman 971lm 973lm keychain garage door opener remote, 1997-2005 red orange learn button (l-keychain-1b) solidremote <p>#</p> <p><b>before purchase, please check your garage door opener</b></p> <p>this aftermarket replacement remote only works with <b>red or orange learn button</b> liftmaster / chamberlain / sears craftsman / raynor / accessmaster / master-mechanic brand garage door opener (hanging in your garage) made around 1997-2005 that features security 390 mhz technology.</p> <p><b>or you can check if your remote control's model number is listed below</b></p> <p>liftmaster: 91lm, 92lm, 94lm, 96lm, 970lm, 971lm, 972lm, 973lm, 973w, 974lm<br/> chamberlain: 950cb, 953cb, 956cb<br/> sears craftsman: 139.53680, 139.53681, 139.53684, 00953680000, 00953681000</p> <p><b>again make sure</b> your garage door remote is listed above or your opener has a red / orange learn button <b>because otherwise it will not work - this remote is not universal.</b></p> <p>#</p> <p><b>feature highlights</b></p><ul> <li>easy to program and use</li> <li>sliding cover protection, no more accidental press in pocket or purse</li> <li>led transmitting & low battery indicator</li> <li>small & lightweight portable keychain style</li> <li>latest rf technology ensures better range</li> <li>true 4-button supports up to 4 different security 390 mhz rolling code encryption devices</li> <li>use one common cr2032 3v lithium coin battery each remote</li> </ul> <p><br/>led indicator illuminates when transmitting, also it will flash during transmitting when battery is low.</p><p>typical battery life is 2 years under average operating conditions using standard 3v cr2032 batteries. <b>not applicable to factory pre-installed battery, which is provided for trial purpose only.</b></p>