EXTECH DESKTOP INDOOR AIR QUALITY CO2 MONITOR

Measures Carbon Dioxide (CO2)
CO200 is a Desktop Indoor Air Quality CO2 Monitor. Measurement ranges are 0 to 9,999 ppm (CO2), 14 to 140°F (-10 to 60°C) for Air Temperature and 0.1 to 99.9% for Relative Humidity. It features Minimum/Maximum CO2 value recall, Year/Month/Date/Time display, and an Automatic Baseline Calibration (minimum CO2 level over 7.5 days) or manual calibration in fresh air. Comes with AC adapter and user manual.

Checks for Carbon Dioxide (CO₂) concentrations with Max/Min value recall function
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 9999ppm
Temperature: 14 to 140°F (-10 to 60°C)
Humidity: 0.1 to 99.9%RH
Displays Year, Month, Date, and Time
Automatic Baseline Calibration (minimum CO₂ level over 7.5 days) or manual calibration in fresh air