3 in 1 Wifi Temperature Humidity Brightness Sensor Battery Powered Thermograph Humidity Gauge Remote Monitoring Via App Temperature Humidity Illuminance Monitor Gauge Large LCD Display for Smart Home. Features include enhanced functionality, comprehensive temperature, humidity, and light display, remote monitoring via app, large LCD display, and versatile applications. Specifications include temperature detection range of -20 ℃~80 ℃, humidity detection range of 0%~100%, luminous intensity detection range of 0Lux~157000Lux, and working temperature of -20 ℃~80 ℃.