Air Quality Monitor Detector Gas Analyzer Thermometer Hygrometer

Features: 
Highly accurate indoor & outdoor air quality monitoring
system with professional grade detection technology.
Detailedly analyze air quality in your surrounding and
detect PM2.5, TVOC, HCHO, CO2, temperature & humidity.
3.5-inch TFT HD color display with wide viewing angle,
which can reach 160°, convenient for your reading.
Rreal-time local outdoor air quality readings plus indoor temp,
humidity, HCHO/TVOC and PM2.5/PM10 real time gas
monitoring to prevent any respiratory disease. 
Suitable for using in the car, living room, house with new
furniture & decoration, kitchen, bedroom, office, classroom,
outdoor environment, etc.
Specifications 
Model: D9-B / D9-D / D9-H (Optional)
D9-B Test TVOC
D9-D Test TVOC, HCHO
D9-H Test TVOC, HCHO and CO2
Material: ABS
Color : White
Measure Medium: PM2.5 & TVOC & HCHO & CO? 
Test Function: PM2.5/PM1.0/PM10,
0.3um/0.5um/1.0um/2.5um/5.0um/10um number of particles
, TVOC/HCHO/CO?, temperature & humidity.
PM2.5 Test Range: 0~6000g/m?3;
Temperature Test Range: -9~55?
Humidity Test Range: 0~100%  

WARRANTY

We'll refund your money if the item hasn't been delivered within 40 days after purchase. You have 2 weeks to request a refund — until day 60.
Product doesn't match the description? Contact us within 30 days after you receive it!
In case of cancellation, money will be refunded to your account within 3 days.