The Privest Wireless Smoke Detector reacts to smoke particles. This indicator is reliably detected and reported to the wireless alarm control panel. The Privest Wireless Smoke Detector is mounted to the ceiling in the center of a room. Its detection range is 40 m². It is recommended to install a smoke detector in every hallway, staircase, living room, and bedroom. The optical sensor of the smoke detector identifies smoke particles that enter its measuring chamber. The Privest Wireless Smoke Detector is integrated into the alarm system, occupying a zone that is always monitored, even when the system is disarmed. In addition to the alarm via the control panel, the integrated Piezo alarm generator also provides an acoustic alarm. With corresponding batteries (two CR123 3V lithium) the Privest Wireless Smoke Detector has a service life of approx. 12 months. The service life varies depending on how often you test the detector's functions. It is recommended that you test it once a week. A weak battery is signalled by the detector by means of beep tones at regular intervals.