Features: Independent sensors, digital monitoring and real-time warning, high precision and sensitivity, comprehensive air quality monitoring. Lottmor sensor, air convection design, history record consultation. It can overcome the influence of the temperature difference on the detection accuracy. The 32-bit industry cpu can make sure that the detectors remain sensitive to the monitoring area and maintain the correct data. Battery and usb two ways to supply power, easy to use and very fast. It can detect pm2.5, pm1.0 and pm10. Applicable for home, outdoor, car and so on. It detects all day and take care of your family\'s health.