The LiftMaster 891LM 1 Button Transmitter Garage Security+ 2.0 myQ Remote Control is a black lithium-ion battery-operated remote control designed for use with Chamberlain, LiftMaster, Raynor, and other compatible brands of garage door openers. It has an operating range of 100 ft and includes batteries in the package. The remote features a single button, operates on the 315 MHz frequency, and is compatible with the Security+ 2.0 model. Additionally, it is smart home compatible with Amazon Alexa and uses Wi-Fi for smart home protocol. Made of plastic, this remote is a reliable and convenient solution for controlling your garage door from a distance.