For more detailed specifications, the data sheet for the VOC sensor can be found here: http://ams.com/eng/Products/Chemical-Sensors/Gas-Sensors/AS-MLV-P2
For more background information about CO₂ equivalents, please read this white paper:
http://ams.com/eng/content/view/download/387555
The downloadable PDF below contains more information about how Eve Room detects VOCs:
The downloadable PDF below contains more information about how Eve Room detects VOCs: