LifeSOS SM-3SH, Wireless Smoke & Heat Detector

LifeSOS Supervised Wireless Smoke& Heat Detector SM-3SH smoke & heat detector is designed to sense smoke that comes into the detector chamber, also the ambient temperature and to give early warning of developing fires by activating LS-30 alarm system, and its built-in siren as well. Power 9V alkaline battery. Current Drain: 6.5uA @ standby, 24mA @ activation. Battery Life: About 2 years. Warning Sound & Indication Alarm Sound Level: 85dB@ 3m. Indicator Light: LED flashes every 45 seconds. Actuation Indicator: LED ON, Buzzer ON. Low Battery: Beep every 45 seconds Dimensions Size: W 140mm x H 45mm. Weight: about 288g ( w/ battery) 1 Year Warranty