This product is an intelligent smoke sensor with signal indicator. Once the smoke reaches a certain level of danger, an alarm will be triggered. Features: Wireless connection, easy to install, no need to worry about wiring, safe and convenient. The siren's LED indicator lights up in red and strobe light to alarm.When the air is fresh and clean, it will stop the alarm and return to the normally monitored low power state. Can connect with APP control. Easy to use and safe. Battery type: CR123A x 1pcs Current: 26uA Alarm current: 120mA-130mA Battery life: 2500 triggers (1 trigger per day, 3 triggers per day, 3 triggers 2 per day) Standby time: 2 years Sensitive distance: 6 meters Viewing angle: 110 degrees Operating temperature: 0 C ~ 40 C (32 F ~ 104 F) Operating humidity: 20% to 85% Storage temperature: 0 C ~ 60 C (32 F ~ 140 F) Product size: 40 * 10 * 10MM