Push Button Transmitter (PBT) 300mhz)

Push Button Trancmitter (PBT) sends signal to remote Door Beacon Receiver (DBR). Transmits up to 75 feet. Built-in light will flash for several seconds each time the transmitter is activated. The Push Button transmitter is battery operated. The door beacon receiver is battery operated or 120 volt A/C, A/C adapter is included. Dimensions of transmitter are approximately 2-1/2"H, X 1-1/2" W, X 1/2" D. One year manufacturer's warranty.