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
Displays Year, Month, Date, and Time
Automatic Baseline Calibration (minimum CO2 level over 7.5 days) or manual calibration in fresh air

Technical Details

Size (LWH): 7.6 inches, 5.1 inches, 3.4 inches
Product Details
Product Dimensions: 7.6 x 5.1 x 3.4 inches
Shipping Weight: 1.1 pounds (View shipping rates and policies)
ASIN : B0029V4XO2