Portable Digital Air Quality Monitor AQI HCHO TVOC PM2.5 Detector CO2 Meter Carbon Dioxide Formaldehyde Tester Gas Analy

Features Product Name CO2 PM2 5 Multi Function Air Quality TesterPM2 5 sensor technology laser scatteringHCHO TVOC Semiconductor SensorCO2 SensorTemperature and humidity sensorLCD screen display 24 hour real time monitoring Power Rechargeable lithium batterySpecifications Examination range AQI 0 500 PM2 5 0 999 μg m3 Carbon dioxide 0 5000 ppm HCHO 0 001 1 999Mg m3 TVOC 0 001 9 999Mg m3 PM2 5 testing standards Excellent 0 35Good 35 75Light pollution 75 115Moderate pollution 115 150Heavy pollution 150 250Serious pollution over 250Formaldehyde standard Less than 0 100 safe range0 101 0 200 Light pollution0 201 0 300 medium pollution0 301 or higher heavy pollutionTVOC standard Less than 0 600 safe rangeReach 0 601 or higher Exceeding the standard will cause the respiratory systemAbnormal inflamed etc Packing Includes 1 Box1 Detector1 Usb line1 Instruction manualPlease click here to download the English manual