Tuya Wifi Smoke Detector smart sensor 90DB Alarm Fire Smoke Detector wireless Fire Protection Home Security Alarm Smart Life Description: Input Voltage: DC9V alkaline battery (Not Include) Static current:10uA Alarm Current:100mA Low battery alert:6.50.5V Alarm Sound Level:90db/2m(2.4GHz) WIFI: 802.11b/g/n Working Temperature:-10-50 Working Humidity: 95%RH Tuya/Smart Life APP control Works with Amazon Alexa / Google assistant Specifications: 1.Smoke AlarmMini Smoke Detector is wonderful Safety & Security Guard for your home security. 2.High sensitivity360 comprehensive highsensitivity monitoring. 3.Low power consumptionThis Smoke detector designed with LOW voltage & faultprompt function and will warning when low power, with Self-test function. 4.Mobile APP reminderYou will be alerted immediately in the event of a fire,to help you escape from Fire Hazard in time. 5. Wide range of usesIt is suitable for fire prevention in many places such as homes, warehouses, hotels, factories and so on. Package Included: 1*WiFi Smoke Detector 1*User Manual Notes: Notice: there is no battery inside the product.