CEM DT-802 Desktop Indoor Air Quality CO2 Monitors

CEM DT-802 Desktop Indoor Air Quality CO2 Monitors
Notice:
The standard package don't include batteries.Because,the international air shipping forbid to ship liquid,powder and batteries,we can not put them in the package box.Hope you can understand buy them in your local store or supermarket.
At the same time, please forgive us that we are unable to provide the English user manual. If you need it, please contact the customer service after purchase.
Thanks for your support!Desktop Indoor Air Quality CO2 Monitors
Checks for Carbon Dioxide (CO2) concentrations with Max/Min value recall function
NDIR (non-dispersive infrared) CO2 sensor
Visible and Audible CO2 warning alarm
Displays Year, Month, Date, and Time
Automatic Baseline Calibration (minimum CO2 level over 7.5 days) or manual calibration in fresh airSpecification
Function Range Resolution Accuracy
CO2 0-9999ppm 1ppm ±75ppm(0-2000ppm)/±8%(2000-9999ppm)
Temperature -5 to 50°C/23 to 122°F 0.1°C/°F ±1°C/1.8°F
Humidity 0.1 to 90.0%RH 0.1%RH ±3%RH(25°C/30 to 99%RH)
±4%RH(25°C/0 to 30%RH)