1. Automatic Brightness Adjustment, Automatic Calibration, Wifif Connection, Distance Sensing 2. Automatic Brightness Adjustment, According To The Surrounding Brightness, Automatically Adjust The Screen Display Brightness To Make The Screen Visible And Not Dazzling.3. The Information Screen Is Energy-Saving, In The Case Of To Use, The Screen Can Be Automatically Turned Off To Reduce Energy 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.4. The Temperature And Humidity Sensor Is Exposed, Which Is More Sensitive To The Surrounding Environment5. 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 Conversion1. Model: PV28-AW2. Sensor: Ndir Infrared Carbon Dioxide Sensor, Optical Sensor3. Detection Technology: Infrared Detection Technology4. Applicable Temperature: 0 ~ 50C5. Display Mode: Led Display6. Carbon Dioxide Measurement Range: 400 ~ 5000 7. Co2 Measurement Accuracy: (50 + 5% * Reading) 8. Temperature Measurement Range: 0 ~ 50C9. Temperature Measurement Accuracy: 1C10. Humidity Measurement Range: 0 ~ 99%RH11. Humidity Measurement Accuracy: 5%Rh12. Product Size: 7 x 8.4 x 3.5cm13. Input Voltage: 5V14. Battery Capacity: 1200mAh15. Charging Interface: Type-CColour:As ShownMaterial:ABSPackage Contents:1 x Detector1 x Type-C Charging Cable1 x English ManualOnly 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.