Wi-Fi THERMOMETER HYGROMETER WITH SMART ALERTS: Connecting with 2.4GHz WiFi(No 5G support), Whether you are or , you will always know the temperature and humidity from the wifi temperature sensor. Alert will be sent to your phone when beyond preset value. REAL-TIME UPDATE & ALWAYS ACCURATE: Indoor thermometer is accurate to 0.1 and 5%RH humidity accuracy. Support data storage and export, Digital temperature gauge supports / reading. LED BACKLIT DISPLAY & AFTER-SALES SERVICE: Room thermometer with a 3.2 inch backlit LED display, Clear reading even in the dark, the backlight can be turned off via the app. Wifi thermometer indoor powered by USB cable, plugged in with USB cable all the time. Colour:White Material:plastic Size: 8.5 x 8.5 x 1.8cm Package Contents: 1 x Temperature Humidity Monitor 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.