This air quality monitor can detect real-time accurate detect air of Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compounds(TVOC), PM2.5, PM10 and . CO2 detection range: 370-9999PPM. PM2.5&PM10 detection range: 0-1000ug/m3. HCHO detection range: 0-1.000mg/m. TVOC detection range: 0-2.000mg/m. detection range: 0-500ug/m3. Using professional-grade optical transmission induction sensors, it can accurately identify indicators of the air, and contains numerical algorithms to achieve intelligent measurement and standard flow. The air quality detector has a built-in large capacity 2200mAh rechargeable battery, standby up to 9hours. You can check the air quality from anywhere, or have the device continuously monitor at a specific location. With 3.2 inch High-definition LCD screen digital display design, this air quality monitor is super easy to read and shows clearly real time data, with backlight display, it can easy to use in dark environments. Adopting with high precision chip, 1 second update and instant response after starting up. Our air quality detector is designed to be used simply requires no calibration. Once turn on the air quality meter, it will automatically measure the surrounding air quality . Our device was specially designed to be operated by anyone, anywhere, so you can keep your space safe without a -induced headache. You can open/close and switch screen information with one-key operation. NOTE: Press MODE button to switch HCHO or TVOC mode. This air quality monitor is suitable for home air detection, car air detection, maternal and child room air detection, and public place detection, perfect for industrial measurement scenarios, including electric power, metallurgy, laboratory, dust removal, bioengineering, etc. Colour:black Material:ABS Package Contents: 1 set x radon detector for home 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.