The smart brightness thermometer senses the changes in the ambient light,temperature and humidity in real time;Actively report to the user end by Smart Life App as the built-in Bluetooth protocol.A really good complement for body health with the real-time detector of house luminance,temperature and humidity with high precision. Clear data change curve display as day,month and year of luminance,temperature and humidity in App helps monitor condition for multiple purposes,as heating control,humidifier and lighting on/off in a preset time for whole house intelligence with infinite sense of wisdom. Remote supervisionof room luminance in App with Bluetooth hub required for high learning efficiency of kids while doing homework with smart scene linkage to house smart switch to turn on the light automatically when the sun goes down or back from whole-day work without manually turning on the light or trigger the switch in app every day for added convenience. An extremely powerful device with mini design for three features , and energy with no need to purchase three different devices for use,fits well with smart modern lifestyle with simple operations. Product Name:Smart Brightness Thermometer Temperature easurement Range:0℃-50℃ Humidity Measurement Range:0%-99RH% Temperature Accuracy:±0.3℃ Humidity Accuracy:±3RH% Light Detection Range:0-999lux Light Perception Range:0.01lux (The product printed words depending on the batch, but this does not affect use) Color: As Shown Material: ABS Package Contents: 1 x Brightness Thermometer 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.