Wifi Remote Control:Wireless light temperature and humidity connection 2.4 GHz WiFi (not support 5G WiFi); no matter where you are, you can monitor the light temperature and humidity remotely, such as in baby room, greenhouse, etc. 4 IN 1 MULTI-FUNCTIONAL:The thermometer hygrometer is equipped with a clear LCD screen and / switch, you can check the current temperature and humidity light on the LCD display or through your mobile phone; what's more, the design of light detection will help you of more many different situations High precision & fast response:temperature range 0-50 (14-140), humidity range 0%-100%RH, light detection accuracy 0Lux-9999Lux. Real-time updates without delay, helping you respond to sudden changes faster Smart Alert Notification:The indoor and outdoor thermometer is designed with Alert Notification, you can set the preset temperature and humidity range, when the temperature or humidity exceeds your preset indoor thermometer, the APP will immediately push the alarm to your smartphone, so that you react quickly Colour:White Material:plastic Size:8.4x5.5x3.2cm Package Contents: 1 * Thermometer Hygrometer 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.