HEALTHY HOME OR OFFICE? – Is your family suffering from sick building syndrome? By measuring PM2.5 particulate pollution, an air pollution monitor can help you know when asthma may worsen and when to change your home’s air filter. Check the safety of guests or customers by measuring the levels of exhaled carbon dioxide which increase when ventilation is inadequate. MULTIFUNCTIONAL & SCIENTIFIC – This indoor air quality monitor accurately assesses temperature, relative humidity level, and multiple measures of air quality including concentrations of carbon dioxide (CO2) and fine particulate dust matter (PM2.5) which travel deeply into the respiratory tract, reaching the lung alveoli and leading to allergies and asthma exacerbations. PORTABLE TESTING – Spot check indoor air quality anywhere. This easy-to-carry air quality tester can help monitor air quality at home, in the car, and in hotel rooms. The lithium battery provides portable power when DC 5V micro USB charging is not available. ADVANCED FAN & SENSORS – This air quality monitor has a built-in fan to quickly draw in ambient air to allow REAL-TIME measurements. It incorporates a laser sensor to measure levels of dust particles and has a non-dispersive infrared sensor (NDIR) sensor for the most precise CO2 measurements. ORIGINAL DESIGN & USA BASED SUPPORT – We have Midwest-based technical staff including a chemist to answer any questions you have. Also included will be a 20+ page eBook on Gas and Air Quality Hazards. This air quality monitor allows REAL-TIME accurate monitoring of carbon dioxide (CO2) and micron-sized fine particulate dust levels with PM2.5 readings.