For use with Silent Call Legacy Series receivers, the Legacy Series Smoke Detector with Transmitter is very simple to install battery powered photoelectric smoke detector from Silent Call, with built-in transmitter. If the smoke detector is "set off" the transmitter sends a signal to any Silent Call Legacy Series receiver. It can send a signal up to 250 feet away, depending on the receiver used. Battery operated - uses one 3V lithium battery (included). Three year warranty on smoke detector and five year warranty on Silent Call transmitter board.
Silent Call products are manufactured in the US, where they test and inspect every product to ensure the highest level of quality. Silent Call backs their products with this promise: Direct manufacturer 5 year warranty service and warranties serviced directly through Silent Call can expect next business day returns.