81LM 850CB Billion Code Remote only for a Green Learn Button of Liftmaster/Chamberlain Garage Door Openers(2Pack) 3-Years-Warranty

**Compatible list**: ONLY Compatible with a Green Learn Button of manufactured from 1993-1995/1997 Liftmaster/Chamberlain/Sears Craftsman Garage Door Opener.Replacement for Liftmaster 81LM 82LM 83LM Chamberlain 850CB 853CB 856CB Sears Craftsman139.53879 139.53859 Remote. **24 Hours/7 Days Amazon Tech Support & 3-Year Warranty**: Enjoy peace of mind with our round-the-clock Amazon technical support and a generous 3-year warranty, ensuring long-term satisfaction and reliability for your garage remote control. **Ultra-Durable & Reliable Performance**: Crafted with a robust ABS alloy casing and FCC certified, our remote control has surpassed 100,000 validation tests and consistent performance you can trust. **Long-Lasting Battery Life**: Featuring a high-capacity 3V 240MAH Lithium battery and advanced third-generation low-power chip, our remote is compatible with most gate motors for extended use without frequent changes. **Enhanced Security with Billion Code **: Secure your garage with cutting-edgeBillion Code technology, providing superior anti-theft protection and peace of mind for your home. **Convenient & User-Friendly Design**: With a 164 feet control range and easy pairing process, this compact remote fits perfectly on your car's visor offering quick and convenient access whenever you need it. 【After-sale Service】We provide 3 YEAR warranty with no condition return or exchange. If you have any query, please contact us through our store homepage "Ask a question" or support email and we will get back to you as soon as possible within 24 hours.