The CDMC-7 system functions like the CDMC-6 for CO2 enrichment or ventilation, but offers the added features of a portable monitor in the CDM-7001 with dual beam absorption, infrared technology and a LCD display that shows CO2 PPM and real time temperature. The CDM-7001 monitor is also equipped with a computer interface to download CO2 history. Recorded data can be graphed and printed using a Windows based VG graphing software (not included).