The 7721 AZ Wall Mount CO2 detector can measure the indoor air quality (IAQ) index, including the CO2 concentration, CO2 level and air temperature. The Carbon Dioxide value can be connected to a PC for on-line analysis via USB interface. And it can be calibrated easily in the fresh air.
Poor indoor air quaintly is considered unhealthy because it causes tiredness, loss of ability to concentrate, and even illness (ex: sick building syndrome). IAQ monitoring especially on CO2 level and air ventilation become widely applied in public areas such as the office, classroom, factory, hospital, work space, residential, commercial building and hotels.
The 7721 AZ CO2 device has the relay function, which can be connected to an audible alarm, siren or LED. It does have its own piezo. It has a stable NDIR CO2 sensor, and it is the ideal instrument for IAQ diagnosis. Its big LCD could be the best CO2 Monitor for long term monitoring. More information is found here.
CO2 Sensor with Alarm Great for Workplace Monitoring
