Liftmaster 371LM transmitter transmitter is a single button 315MHz remote compatible with Liftmaster Security+ products. The 371LM Includes visor clip and 3v lithium battery.
LIFTMASTER 371LM SPECIFICATIONS:
315 Mhz frequency
5 year battery life with 3V lithium battery
1.75" x 3"
Security+ compatible
For Liftmaster universal receivers that have a purple learn button or 315MHz Security+ products