Note: Please see the complete product introduction 1. The link contains two versions (WiFi version and Zigbee version) of smart temperature and humidity sensors; 2. Please pay attention to choose the right product; 3. By default, the product will be shipped according to the product selected by the buyer (If the purchase is wrong, please return at your own expense.); (WiFi Version)Tuya WiFi Temperature & Humidity Sensor Features 1.The temperature and humidity sensor can be linked with other smart devices in the home to improve the indoor heating and cooling, and make your home more comfortable; 2.Low advantage design to ensure long-term battery life; 3.The built-in high-precision digital sensor can quickly and accurately find the temperature and humidity changes; 4.Download smart life /Tuya smart APP on your phone&Tablet to control the wifi remote control and check temperature/humidity date anywhere/anytime; 5.Can be used with Alexa and Google home (WiFi Version)Tuya WiFi Temperature & Humidity Sensor Specifications: Product name: WiFi Temperature and humidity sensor Battery type:2*AA(NOT INCLUDE) Quiescent current:30uA Low voltage and undervoltage:2.7V Wireless protocol: 2.4GHz Working temperature:-10~+50 Working humidity:10%-90%RH APP:Smart Life APP / Tuya APP Works With:Alexa and Google home (WiFi Version)Package Included: 1*WiFi Temperature and humidity Sensor 1*Instruction Notes: 1.WiFi version temperature and humidity sensor do not require HUB 2.Zigbee version temperature and humidity sensor need to be used with Tuay Zigbee gateway.