Test content: O3+AQI+Temperature+Humidity 
1. Electrochemical sensor 
2. TFT LCD screen display  
3. Resolution: 320 x 240 pixels 
4. It can be used in office, indoor outdoor and detection of ozone residue after disinfection. 
5. 24 hours real time monitoring 
6. Power supply: Built-in Li-battery 2000mAh 
7. Material: ABS with TFT Screen 
8. Color: Black & Orange 
9. Detection data range: O3(0-50ppm) 
10. Size : 164 x 74 x 26mm