Poor air quality is often the cause of discomfort or fatigue and reduces concentration and performance. This is due to an increased or excessively high level of carbon dioxide (CO2) in the indoor air. Use the CO-100 to monitor rooms where people are present. Air quality is continuously monitored. When the set threshold values are exceeded, an alarm is triggered, indicating that ventilation is needed. A special feature is the relay output located inside the housing (NO contact, normally open), which is activated when a customizable threshold is exceeded. Ideal for workspaces and children's rooms, public buildings, schools, offices, etc. Special feature: includes data logging function, wall-mounted.