Envea Cairclip NO2

The CairPol CairClip NO2 is a lightweight, portable sensor for measuring nitrogen dioxide in parts per billion or micrograms per cubic meter in applications such as personal exposure and indoor and outdoor air quality monitoring. It uses a micro fan to actively sample air. The CairClip can run on battery power for approximately 24 hours, but it can also operate continuously for much longer periods when plugged into a power source.