This Silent Call Signature Series directly wired doorbell transmitter is designed to be attached to your existing doorbell wiring and it is then activated by the same current that operates that doorbell chime. When the existing doorbell button is pressed this transmitter will send a signal up to 700 feet away to any of the Signature Series 418MHz receivers.
This unit is provided with complete wiring instructions, it is easy to operate and since it is hard wired there are no batteries to worry about replacing.
Five year limited manufacturers warranty.
Product Manual Click Here For The Signature Series Wired Doorbell Transmitter Instructions