... DPM1003: Carbon dioxide (CO2), CO2 average level (in setting time range: 1~24hous), Temperature, Humidity, Clock and Time. DPM1004: ... Carbon dioxide (CO2), CO2 average level (in setting time range: 1~24hous), VOC, Temperature, Humidity, Clock and Time. ... Temperature and humidity Switzerland digital temperature/humidity sensor built in with high accuracy and stability. It also has compensation ...