Indoor Air Quality Meter

Ideal for monitoring indoor air quality in crowded public spaces or HVAC equipment. Backlit simultaneous display of carbon dioxide level, humidity, and air temperature, or choose a rotating display of dew point and wet bulb temperature instead of air temperature. Also calculates time weighted average and short-term exposure limit. Features audible threshold alarms, min/max/average, hold, and a computer interface. Non-dispersive infrared technology ensures long-term accuracy, stability, and reliability. Includes a hard carrying case and four AA batteries.