Feature:1. PERIODIC SELF CHECK KEY: Press the self check key to perform self check regularly to ensure the normal operation of the alarm2. SENSITIVE SMOKE DETECTION: The detector is mainly composed of a set of infrared transmitting tubes and receiving tubes. When smoke and fire hazards are detected, an audible alarm of up to 95dB will be issued, the LED light will flash red, and will be pushed to the mobile APP to protect the safety of the whole family3. REMOTE ALARM: Remote monitoring by mobile APP, once the smoke concentration is too high, the smoke alarm will alarm immediately, and the linkage gateway and mobile APP will alarm at the same time4. LOW BATTERY REMINDER: When the detector is in the alarm state, the remote mute function can be realized through the APP5. SIMPLE AND CONVENIENT: No tools required, just a piece of adhesive to stick the smart smoke alarm in the right placeSpecification:Item Type: Smart Smoke DetectorMaterial: ABSSupport App: For Tuya AppSound: 95dBWorking Voltage: DC 3VCommunication Distance: More than approx. 50meter / 164ft in open spaceBattery Type: 1 x CR2 lithium battery 150mAh.Package List:1 x Smoke Alarm1 x Sticker2 x Anchor2 x Screw1 x User Manual