Temtop M2000 CO2 Air Quality Monitor Easy Calibration Audio Alarm

M2000 air quality monitor combines ease of use and performance, provides exactly what you need to stay on top of your home air quality levels. Measuring range (PM2.5/PM10): 0~999 ug/m³ Measuring range (HCHO): 0~5 mg/m³ Measuring range (CO₂): 0~5000 PPM Operating environment: Temperature range: 0-50 ℃ / Humidity range: 0-90% RH 7:1 DesignThe M2000 Air Quality Detector detects HCHO + PM2.5 + PM10 + Particles + CO₂ + Temperature + Humidity.  TFT color LCD screen. Wide ApplicationThe monitor makes it easy to take measurements from one room to another in order to get an overview of the concentrations of various pollutants in home, workplace, school, a daycare center or any other location.6 Hours Battery LifePowered by internal 2200 mAh rechargeable lithium battery, it will run 6 hours continuously without charging     Input voltage: DC 5 V Input current: 1 A Battery Voltage: 3.7 VDC Multifunctions Suspend/Continue measuring Mute/Unmute the buzzer Display/Not display the curve Alarm setting Zero calibration Exit