Features ARM Microcomputer Processor: The PM2.5 detector intelligence is derived from ARM microcomputer processor. ARM chip is 10 times faster than similar products using 8‑bit computing, which bring more accurate detection and smoother system. Thousand Display: The PM2.5 detector has thousandth display, users does not need to calibrate, the reading can be read after the boot is stable, USB power to use without needing of warm up. Equipped with fan, which guarantee good heat dissipation effect. electrochemical principles: The PM2.5 detector use electrochemical principles, multi&#8209, layer special glass fiber microporous filtration can effectively eliminate the interference of ethanol, carbon monoxide, etc. Monitoring Function: The monitoring function is realized by electrochemical principles, and data processing algorithms are added to obtain stable and accurate data. Professional Air Quality Index: We have to breathe 23040 times a day. We hope every breath is safe. We provide an easy to understand user manual and provide you with complete customer support. Controlling family health starts today. Specification: Item Type: PM2.5 detector Material: Plastic Model: A1 communication Screen: 2.8in LED Scope of Application: Home, car, office, outdoor Power Supply: DC5V, MicroUSB interface PM2.5 Measurement Technical Indicators: Measuring Range: 0-2048ug/m3 Display Accuracy: 1ug/m3 PM1.0 Measurement Technical Indicators: Measuring Range: 0-2048ug/m3 Display Accuracy: 1ug/m3 PM10 Measurement Technical Indicators: Measuring Range: 0-2048ug/m3 Display Accuracy: 1ug/m3 Temperature Measurement Technical Indicators: Measuring Range: 0-50℃ Measurement Accuracy: ±2℃ Humidity Measurement Technical Indicators: Measuring Range: 20-90%RH Measurement Accuracy: ±5%RH Package List: 1 x PM2.5 Detector 1 x Data Line 1 x User Manual Package List 1 x PM2.5 Detector 1 x Data Line 1 x User Manual