Features:

• Checks for Carbon Dioxide (CO2) concentrations
• Maintenance free NDIR (non-dispersive infrared) CO2 sensor
• Indoor Air Quality displayed in ppm with Good (0 to 800ppm), Normal (800 to 1200ppm), Poor (>1200ppm) indication
• User programmable Visible and Audible CO2 warning alarm
• Displays Year, Month, Date, and Time
• Max/Min CO2 value recall function

Specifications:

• CO2: 0 to 9999ppm
• Temperature: 23 to 122°F 
• Humidity: 0.1 to 90.0%
• Display: LCD with backlighting
• Sampling Interval: 2 seconds
• Overload Indication: "-OL-"
• Sensor Type CO2: NDIR (non-dispersive infrared) technology 
• Operating Conditions: -5°C to 50 °C (23 oF to 122 oF) at < 90 % RH 
• Storage Conditions: -5°C to 50 °C (23 oF to 122 oF) at < 90 % RH
• Power Supply: 110V-220V AC, output 6.0V DC ≥ 500mA (supplied)

The CO100 is a desktop indoor air quality CO2 monitor that measures carbon dioxide concentrations (CO2) from 0 to 9,999ppm, air temperature and humidity. With user programmable visible and audible CO2 warning alarm. Meter has a maximum/minimum CO2 value recall function. Maintenance free NDIR (non-dispersive infrared) CO2 sensor. Complete with Universal AC adaptor.