Product name: air quality detectorProduct model: DM-72Display mode: LCD high-definition liquid crystal displayTest items: formaldehyde and TVOC in the air (including benzene)Detection range: 0.000~1.999mg/m3 (formaldehyde)0.000~9.999mg/m3(TVOC)Detection principle: principle of semiconductor gas sensor+Laser scatteringDetection time: 5. 10 minutesSampling method: diffusion collectionConcentration unit: mg/m3Atmospheric pressure: 86Kpa-106KpaRelative humidity: 20%-85%Working humidity: 5°C~45°CCharging temperature: 0°C~45°CStorage temperature: -20°C~50°CBattery: Lithium batteryBattery capacity: 2000mAhInput: 5V/1A.Dimensions: 78X96X139(mm)