1. Eight functions of comprehensive air detection to create an era of air detection laser 2. HCHO accurately detects formaldehyde PM2.5 air quality monitoring 3. Accurate measurement of formaldehyde PM2.5 PM2.5 air quality monitoring in dry position 4. Accurate detection of CO2 PM10 air quality monitoring C02 carbon dioxide quality monitoring PM10 PM10 air quality monitoring 5. Air quality PM1.0 air quality monitoring 6. AIR air quality PM1.0 PM1.0 air quality monitoring 7. Temperature monitoring Humidity monitoring 8.Temp temperature monitoring Humidity humidity monitoring Suitable for detection of detection environmental conditions Product Name: Indoor Air PM2.5 Detector Measurement object: smog PM2.5 Colour:green Material:ABS Size:8.5 x 6 x 3.8cm Package Contents: 1 x Indoor air PM2.5 detector 1 x Data cable 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.