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
Measurement ranges:

CO2: 0 to 9999ppm
Temperature: 23 to 122°F (-5 to 50°C)
Humidity: 0.1 to 90%RH

Displays Year, Month, Date, and Time
Max/Min CO2 value recall function

Function	Range	Resolution	Accuracy
CO₂	0 to 9999ppm	1ppm	±75 ppm or ±5% of reading
Temperature	23 to 122°F (-5°C to 50°C)	0.1°	±1.5°C/2.7°F
Humidity	0.1 to 90.0%	0.1%	±5%
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)
Dimensions / Weight	117x102x102mm (4.6x4x4"); 204g (7.2 oz.)

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