Multifunction:

CO2 (carbon dioxide), CO (carbon monoxide), O2 (oxygen in air), humidity, temperatureThe device comes with 4 probes and a case.

CO2 measurement range: 0 to 4000 ppm x 1 ppm

O2 measurement range: 0 to 30.0% x 0.1%

CO measuring range: 0 to 1000 ppm x 1 ppm

Temperature measurement range: 0 to 50 ° C, unit selection ° C / ° F

Humidity measuring range: 10 to 95% RH

Dew point: -25.3 to 48.9 ° C, unit selection ° C / ° F