Main Features:  1. Tuya Smart ZB Smoke Detector: A Tuya ZB Wireless Gateway Hub is a must to work with the smoke detector sensor,as well as a variety of ZB smart products, which is proved to be the bridge and control center for smart homes and plays an irreplaceable role for ZigBee products and realizes the whole linkage of your house.Simply add the sensor into ZB the hub after adding the hub into Smart Life/Tuya App.  2. Professional maze design, fast perception of fire supported that ensures high sensitivity of smoke and temperature, effectively reduce false positive rate and make the police more accurate.It adopts the preferred flame-retardant material shell, which has the characteristics of radiation resistance, heat resistance and impact. Besides,the smoke detector provides with live sound alarm and light flash.  3. App Push Notifications and Control: Compatible with Smart Life and Tuya App enables the timely discovery of danger of fire or smoke and real- time notifications to your smart phone. No need to be connected to the alarm host that is able to work independently with ZigBee hub connected for informing alarm situation. And even low battery indication in smart phone App.  4. Low power design and long battery life for ZigBee new version with low voltage monitoring prompt function available.Remotely self-test for the smoke security offers much convenience,as well as manual muting,is smartly supported via smart phone app with alarm situation,together with the smart button for testing and sound silence manually, which is applicable for residential,shopping malls,warehouses, etc. with potential fire danger.  5. Real-time Voice Alarm Prompt with Wide Range: This smart smoke detector owns the wide monitoring range of3m ahead,and it will intelligently and quickly issue more than 85dB alarm sound and push notification to you App automatically;      Parameter:  Communication Mode: ZB;  Operating Power: DC 3V(CR123A);  Sound Level: ≥85dB/3M;  Monitoring Range: 3m ahead;  Working Temperature: -10℃~+55℃;  Working Humidity: 10%-95%RH;  Installation: Bracket;    Package included:  1 x Smart Smoke Alarm;  1 x  User manual