A PC controlled Indoor Air Quality (IAQ) Real Time Monitoring System allowing the networking of several monitoring units, which can all simultaneously measure up to six different IAQ parameters including formaldehyde, carbon dioxide and carbon monoxide. Each individual unit can be set to monitor at regular intervals over a set period of time using a single PC and the data from all the units can be displayed graphically.

The system has been designed to give a visual representation of indoor air quality in buildings, as part of the buildings management standards in relation to conditions such as Sick Building Syndrome. Since a great number of units can be networked, the system can show precise changes in concentration of selected air quality parameters in various locations over time.