Intelligent Brightness Detector Detect indoor light intensity and temperature and humidity, wireless and mobile phone communication, mobile APP to view brightness value and temperature and humidity value, has been connected to Google, Amazon speaker interaction. Luminance sensor brightness detection, cooperate with Tuya smart home system. connection router, widely used! type:ZigBee Colour:black Material:plastic Size:100 x 100 x 40mm Package Contents: 2 x Brightness Detector 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.