in for ARM 32 bit processor, detection & system fluency 2.8inch TFT screen, colorization display, wide angle vision up to 180° High sensitivity sensor ensures the high accuracy in data collections Semi-closing design performs in heat radiation, long-life Multipurpose in quality detection in PM1.0, PM2.5, PM10.0, , temperature&humidity, suspended particulate matter Real-time detection results will be shown on screen in corresponding colors related to collected datas Lightweight, easy to and be a straightaway in data interpretation supply in DC 5V universal, usb socket, car charger, bank, etc Suitable /office and car or part scope on quality detection Working Principle: Multi-angle Laser Scattering Detection, laser irradiation in the suspended particulate matter in the and generate scattering. Scattered light will be collected in a specified angle at the time. According to the scattering intensity, time-varying curves can be obtained through the sensor. Being processed by the microcomputer processor, equivalent particle diameters and the number of suspended particulate matter with different sizes in per unit volume can be obtained. Material:plastic colour:Green Package Contents: 1 x Quality Detector Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.