The SD-29 is a wirelessly operated photo-electronic Smoke Detector designed to operate with any Z-Wave enabled controller devices; it also features smoke detecting, temperature sensing and IR detection. The Smoke Detector’s alarm situations, battery condition, operating conditions, supervisory data and general fault information are sent to the Z-Wave Gateway/Control Panel wirelessly. The device is also serially connected with other sensors in the Z-Wave gateway to serve as an extra siren. When any other sensor in the Z-Wave network is activated and sends an alarm signal, the Smoke Detector will also raise alarm with its built-in buzzer as a siren to help sound warning.