Features:Powered by USBThe sensor is powered by USB. Compared to the battery version, the sensor monitors temperature and humidity in real time. Sensors report when temperature and humidity changes are small. You can check the change of the value on the APP or the display screen.OF and C SwitchOF and C Switch.You can switch temperature unit between OF and C just through press of the reset button one time.Accurate measurement Real-time update without delay.LCD displayLCD display.The sensor adopts LCD as temperature and humidity display, adding time and date display on the screen. The time and date are automatically calibrated.The temperature and humidity changes are recorded on the APP and shown to you using graphs.Scene linkageScene linkage.The sensor can be used as a temperature and humidity data source for Doodle Smart, Smart Life, Amazon Alexa, and Google Home. You can perform many processes based on data sources. Voice supportThird-party voice support. The sensor supports Amazon Alexa and Google Home Assistant. You can view the current temperature and humidity by voice.Temperature accuracy: 1; Humidity measurement range: 0% RH ~ 99% RH; Humidity accuracy: 1% RH.Specifications:Material:ABSColor:WhiteSize(about):65x65x17mm/2.6x2.6x0.7inch(LxWxThick)Power supply: DC 5V/1A Mocro USBWi-fi frequency: 2.4g IEEE 802.11b/G/NTemperature measurement range: 0-60Temperature accuracy: 1Humidity measurement range: 0% RH ~ 99% RHTemperature Measure Accuracy: + 1CHumidity Measure Accuracy: +5%RHPackage Included:1pc x WiFi Temperature Humidity Sensor1pc x USB cable1pc x ManualNote:1. Due to the light and screen difference, the item& 039;s color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement.