Feature:1. Intelligence is derived from ARM microcomputer processor. ARM chip is 10 times faster than similar products using 8bit computing, which bring more accurate detection and smoother system2. No need to calibrate, USB power to use without needing of warm up3. Equipped with fan, which guarantee good heat dissipation effect4. Using electrochemical principles, multilayer special glass fiber microporous filtration can effectively eliminate the interference of ethanol, carbon monoxide, etc.5. The monitoring function is realized by electrochemical principles, and data processing algorithms are added to obtain stable and accurate data6. Thousandth display, users does not need to calibrate, the reading can be read after the boot is stableSpecification:Item Type: PM2.5 detectorMaterial: PlasticModel: A1 communicationScreen: 2.8in LEDScope of Application: Home, car, office, outdoorPower Supply: DC5V, MicroUSB interfacePM2.5 Measurement Technical Indicators: Measuring Range: 0-2048ug/m3Display Accuracy: 1ug/m3PM1.0 Measurement Technical Indicators: Measuring Range: 0-2048ug/m3Display Accuracy: 1ug/m3PM10 Measurement Technical Indicators: Measuring Range: 0-2048ug/m3Display Accuracy: 1ug/m3Temperature Measurement Technical Indicators: Measuring Range: 0-50Measurement Accuracy: 2Humidity Measurement Technical Indicators: Measuring Range: 20-90%RHMeasurement Accuracy: 5%RH.Package List:1 x PM2.5 Detector1 x Data Line1 x User Manual