Which gases can VOC sensors detect?

VOC stands for Volatile Organic Compounds.

These are organic gas combinations that evaporate easily. Examples are

-alcohols
-carbons
-organic acids
-cigarette smoke
-perfumes
-and so on

An exact list of all VOCs or a binding definition does not exist in literature.  

VOC sensors do not detect a specific type of gas. They detect the sum of VOC in the ambient air. VOC sensors from Thermokon produce a relative signal from 0-100% to show the VOC concentration.