This is a LiftMaster 971LM Security and Garage Door Remote Control by LiftMaster!
* 390 MHz Liftmaster 971 LM transmitter is compatible with orange or red learn codes
* Operating range: 100ft
* Operates on a 3 volt lithium battery
* Frequency of operation: rotating
* Transmitter: 1 - button, 390 MHZ Frequency, code rotating technology (Security+)
* Includes clip for mounting to a car visor
Features Security+® rolling code technology; Compatible with LiftMaster® 390MHz Security+® Garage Door Openers and Radio Controls with a Redish orange learn button on the motor head