• Checks for Carbon Dioxide (CO2) concentrations
• Maintenance free NDIR (non-dispersive infrared) CO2 sensor
• Indoor Air Quality displayed in ppm with Good (380 to 420ppm), Normal (<1000ppm), Poor (>1000ppm) indication
• Visible and Audible CO2 warning alarm with relay output for ventilation control
• Measurement ranges:
CO2: 0 to 9,999ppm
Temperature: 14 to 140°F (-10 to 60°C)
Humidity: 0.1 to 99.9%RH
• Displays Year, Month, Date, and Time
• Max/Min CO2 value recall function
• Automatic Baseline Calibration (minimum CO2 level over 7.5 days) or manual calibration in fresh air
• Complete with Universal AC adaptor
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