Features: Strong anti-interference ability, low consumption and long service life. Accurate detect air of Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compound(TVOC), Particle Matter(PM2.5), Temperature & Humidity. For everyone,It's necessary to know the air quality of the place where you live.This air monitor have LCD Digital Color Screen, large and easy to read. Help us detect the air quality in household, kitchen, bedroom, office, school, car, hotel, travel, camping, party etc...especially in which has baby,child and pregnant woman. Hundreds of ventilation holes at the back of housing not only accelerate the convection between the air and the machine, thereby realizing effective detection, but also provide a fine heat dissipation effect. Specifications: Material: ABS+ Metal Size: 90x70x35mm/3.5x2.76x1.38in Color: white/black(optional) PM2.5 Detection-Range:0-999 ug/for m CO2 Detection-Range: 0-5000 PPM, +50 +5%PPM CO2 Detection Sensitivity: 1PPM TVOC Detection-Range: 0-9999 ug/for m HCHO Detection-Range: 0-9999 ug/for m Temp Measurement-Range: 0 -70 Temp Measurement Accuracy: 1 Humidity Measurement-Range: 0%-99%RH Humidity Measurement Accuracy: 2%RH Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Air Quality Monitor