Product Features: 1. APP Remote ControlThe Sensor can be controlled via Tuya Smart or Smart life app.You can view its data anywhere.2. Reminder FunctionYou can set the temperature and humidity conditions to remind you. When the conditions are met, you are reminded to take measures.3. Data RecordingSupport Temperature and humidity data cloud storage. You can track your historical Temperature and humidity changes.4. Support LinkageSupports linkage operations in the same App (Smart Life or Tuya Smart).5. Low Power Consumption & Low Voltage RemindUltra low-consumption design, which can make it work long time. The 7 battery is easy to obtain and replaceWhen battery level is low, it will automatically remind you to change batteries, never worry about running out of battery.6. Works with Amazon Alexa and Google HomeAfter linking your Amazon Alexa or Google home account in smart life or Tuya smart, you can use voice to query the current temperature and humidity, and set linkage strategy7. Easy to Install Direct placement or double-sided adhesive wall. No complicated installation tools are required. Product Parameter: Protocol: ZigBeePower Supply: 7 AAA*2 (NOT INCLUDED)APP: SmartLife or Tuya SmartOperating Temperature : -10-55 Temperature Accuracy : 0.3 Humidity Accuracy : 3% RHDimension :61.2*23mm Tuya Zigbee GateWay Requested The sensor uses the zigbee protocol to communicate. It needs to be linked to the Tuya Zigbee gateway. NOTE: The gateway is required. APP Remote Control The Sensor can be controlled via Smart Life or Tuya Smart APP. All alarm notifcation will be push to your smart phone.You can download it in Google pay, app store or scan QR code. Voice Control Support Alexa and Google Home.