liftmaster 371lm garage door opener remotes (2-pack) liftmaster liftmaster 371lm (2-pack) purple learn button systems (2005-2013) for purple learn button systems our basic single-button remote control isn't so basic. it can operate a single garage door or gate, or turn your garage door opener lights on/off. you can also use it as an extra remote control to turn on lights or small appliances inside your home all from the comfort of your car. it features security+ rolling code technology that sends a brand new code every time it is used.