Key features: It's a 3-in-1 device: detects smoke, measures temperature, and measures humidity. It has a built-in LCD screen for displaying temperature and humidity readings. It is possible to create conditions to control other devices (Smart Automation). Detection: Type: Smoke Detection Coverage area: 80 square meters (80㎡) Notification: Alert methods: Send an audible alert to the device and send notifications via the network (application). Sound level: ≥ 85dB (at a distance of 3 meters) Connectivity and power: Connectivity: Zigbee Input power: DC 3V (battery operated) Current consumption: Standby ≤ 5μA / Alarm ≤ 25mA Material: ABS+PC (durable and flame-retardant)Dimensions: 82 x 82 x 29 mmInstallation: Mount on the ceiling or wall.Working conditions: Temperature: -10°C to 55°C Humidity: 0% to 95% RH (no condensation)