Temtop M2000 CO2 Air Quality Monitor Easy Calibration Audio Alarm

Real-Time Display, Carbon Dioxide Air Quality Meter - M2000 Temp M2000 is a handheld monitor able to measure PM2.5, PM10, carbon dioxide, and formaldehyde and temperature and humidity. It displays accurate readings and instant results as you change the environment.  It is our best seller monitor, the Temp&Humi sensor can help you verify your air conditioner performance, the CO2 sensor is suitable for someone living close to heavy traffic areas, wildfires, or industrial plants where there is a serious level of smoke, or even if you just need an accurate and reliable device to measure the indoors of your home. Also, it counts with formaldehyde sensor, which is a common chemical used in many pressed wood furniture and wood floors affecting directly the air we breathe.  7 in 1 - Air Quality Monitor  The M2000 air quality monitor is a device with multiple sensors to measure different kinds of pollutants like PM2.5, PM10, CO2, Particles, and Temperature and Humidity. It also counts wi