Feature:1. AIR CONVECTION TECHNOLOGY: Air quality monitor has 10 in 1 multi function, measurement is more sensitive, accurate and reliable, and users are more assured2. 4.3IN LCD SCREEN: The air quality monitor multicolor screen use omni directional viewing technology, so you can clearly see the value from any angle3. EASY TO USE: This air quality tester use only 3 buttons, and the top button operation is simple and intuitive, all operations can be done with 3 buttons4. STRONG BATTERY LIFE: Air quality detector support plug and play, using MicroB USB interface, built in 3000mAh large battery, bring lasting battery life5. TECHNICAL PARAMETERS: Indoor air quality monitor atmospheric pressure from 86Kpa106Kpa, PM2.5, PM1.0, PM10 detection range is 0999 ug/mSpecification:Item Type: Air Quality MonitorBattery: 1x3000mAh rechargeable lithium batteryAtmospheric Pressure: 86Kpa-106KpaPM2.5, PM1.0, PM10 Detection Range: 0-999 ug/mDetection Temperature: -10 to 50; 14 to 122Relative Humidity: 20%-85%.Package List:1 x Host1 x USB Cable1 x User Manual