Liftmaster 371LM / 370LM Compatible Mini 1 Button 315MHz Garage Door

1 LiftMaster 1-Button . This is a standard size transmitter with sun visor clip designed to be placed in your vehicle. Model 371LM is for LiftMaster and Sears garage door openers with a purple learn button. 315MHz Frequency. Includes programming . 5-year lithium batter is already installed in .