This wireless push button can be added to any of our warehouse buzzer doorbell kits as a remote door bell. This push button switch is great for systems where there is pedestrian access, such as will-call windows, delivery doors, and waiting rooms. Whether your wireless doorbell is for a residential area or industrial sector office environment, this commercial door chime transmits a signal to our wireless chime systems. The button has a transmission range of 2500'. This transmitter is compatible with all of Milton's new chime kits and not compatible with the older 2500 series chimes. This doorbell button comes with a 3 volt lithium ion battery for wireless operation.