WIFI THERMOMETER HYGROMETER: No hub required, Connecting with 2.4 GHz WiFi (which doesn't support 5G WiFi), you can remotely monitor the smart humidity sensor. Smart temperature sensor supports Free App Alerts, switch the temperature units between and , View History Records, and Temp Humidity Graphs functions. SMART SCENE TO TRIGGER ALERTS OR DEVICES: Wall temperature gauge indoors can be used as the temperature and humidity data source for Tuya Smart, Smart Life, Amazon Alexa, and Google Home. Create a scene via the app, Alert will be sent to your phone when beyond preset value. You can also set a scene to automatically turn your AC on when the temperature reaches the limit value, or the dehumidifier in your room starts working once the humidity is over higher. VOICE CONTROL: Wifi Temperature and Humidity Sensor supports Amazon Alexa and Google Home to ask for temperature. You can know the current temperature humidity by voice. About Network Testing: Devices using the network consume a lot of power. To ensure the service life of the battery, the device will stop using the network when it does not need to report data Therefore, it is meaningless to test the network signal of sensors in APP. COMPACT DESIGN & VARIOUS INSTALLATION METHODS: wifi thermometer hygrometer indoors is small enough to fit in potted plants, reptile vivariums, cigar humidors, and other small spaces. You can monitor your 's room, wine cellar. Lay this wireless remote thermometer on any spot of your house or mount it on the wall or in other places with the sticker or screws. All temperature and humidity sensors will have certain errors, please note. The temperature error of this sensor is 1 , and the humidity error is 5% RH. Any value within this range is normal. According to Newton's third law, heat conduction takes a certain time. The sensor needs 30 minutes or 1 hour to be consistent with the room temperature, and the measurement will be accurate. Support for third-party smart speakers: 1. Because the third-party smart speakers (Google Home/Amazon Alexa) do not have control panels corresponding to temperature and humidity sensors,Therefore, the APP of third-party smart speakers may not display the temperature and humidity correctly.But we have developed voice query function. Therefore, the current temperature and humidity can be queried by voice 2. Route or automatic process related to temperature and humidity cannot be established on the third-party smart speakers. 3. The device does not support Yandex Alice. APP:Tuya Smart/Smart life Power supply:Micro-USB 5V/1A Standby currebt:45uA Temperature reporting accuracy:0.3C Humidity reporting accuracy:6%RH Temp. and humidity detection interval:300 seconds Temperature detection range:-10C-60C(14F-140F) Humidity detection range:1%-95%RH(non-condensing) Wireless standard:ZigbeeIEEE 802.15.4 Wireless distance:45M The device needs to work with the Zigbee and HomeKit gateway, Not Included Power Suplly:1 x AA battery(Not included batteries) Colour:White Material:ABS Size:82mmx27mmx23mm Package Contents: 1 * wifi temperature sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.