Feature: 1. DETECTION PARAMETER: Multifunctional air quality monitor, which can be used to monitor PM2.5, PM10, HCHO, organic pollutants, CO, CO2. 2. EXCELLENT SENSORS: Using intelligent air semiconductor sensor to detect the air, ensuring sensitive, accurate, and stable measurement. 3. COLOR LCD SCREEN: The air quality detector has color LCD digital screen for easy recognition and reading, with hollow design on the back for quick heat dissipation. 4. MULTIPLE FUNCTIONS: Built in multiple sensors, infrared detection technology, with real time data refreshing and one key calibration function, quickly press the power button 3 or 6 times. 5. APPLICABLE SCENES: Widely used for indoor air detection, suitable for kitchens, bedrooms, mother and baby rooms, offices, classrooms, in cars, hotels, camping, public places, etc. Specification: Item Type: Air Quality Tester Material: ABS Battery: 3.7V 2000mAh Lithium Battery (built in battery) Use: Widely used for indoor air quality testing in homes, car air testing, maternal and infant room air testing, and public place testing Basic Parameters: PM2.5: 0-999ug/m³ PM10: 0-999ug/m³ HCHO: 0-9.999mg/m³ Organic Pollutant: 0-9.999mg/m³ CO: 0-999PPM CO2: 400-5000PPM Air Quality Index: 0-500. Package List: 1 x Air Quality Tester 1 x USB Cable1 x User Manual