1. Automatic Brightness Adjustment, Automatic Calibration, Wifif Connection, Distance Sensing Wake-Up 3. The Information Screen Is -Saving, In The Case Of To Use, The Screen Can Be Automatically Turned Off To Reduce Consumption, And The Sensor Can Still Transmit Data To The Cloud Through When The Screen Is Turned Off, And The Real-Time Value Can Be Viewed Through The App. 2. Automatic Brightness Adjustment, According To The Surrounding Brightness, Automatically Adjust The Screen Display Brightness To Make The Screen Visible And Not Dazzling. 4. The Temperature And Humidity Sensor Is Exposed, Which Is More Sensitive To The Surrounding Environment 5. High-Performance Chip, Capture The Weak Current Generated During The Electrochemical Reaction, Accurately Calculate The Co2 Measurement Results, Increase The Service Life, Improve The Output Efficiency, And Effectively Improve The Conversion, Weight: 0.49934702343 Pounds, Manufacturer: Jaywool