CO 

Range

0 to 500PPM

Accuracy

+/-3% of reading or +/-3PPM whichever is greater

Resolution

0.1PPM: 0-99PPM 1PPM: 100-500 PPM

CO2 

Range

0 to 5000PPM

Accuracy

+/-3% of reading or+/-50PPM whichever is greater

Resolution

1PPM

Temperature 

Range

- 4 to 140F (-20 to 60C)

Accuracy

+/- 1F (+/-0.5C)

Resolution

0.1F (0.1C )

Relative Humidity 

Range

2 to 98%RH

Accuracy

2 to 80%RH:±2%RH, 80 to 98%RH:±3%RH

Resolution

0.1%RH

Function

Normal Mode

Normal measuring (do not store and calculate the data.) Relative humidity, CO, CO2, Dew point, Wet bulb temperature, Absolute humidity and Humidity Ratio

Calculation Mode

Store the data, and calculate the maximum, minimum and average value.

% OA Mode

Measure ventilation ratio (Ask for ventilation ratio by calculating from temperature and CO2 value)

Data Output Mode

Perform re-calculation of stored data and output of data to PC and Printer.

Calibration Mode

Perform the calibration of CO and CO2.

Output 

Digital

RS232C

Analog (option)

DC 0 to 1V

Power Supply

AAA Battery x 4 (Mn, Alkaline, or Ni-Cd)

Dimensions 

Unit

3.5" x 7.5" x 2.0"

Probe

Length: 12.5 inch / Diameter: 1.0 inch

Weight (including batteries)

Approx. 1.2 lbs (500g)