For cases where an analog signal is required proportional to the concentration of CO2, and wants to leverage existing installation with minimum wiring works, can be combined within a wireless sensor CO2 with a receiver that signals analog 0-10v for the proportional fan controller, so you can combine the advantages of a wireless CO2 sensor in existing analogue installations…

The receiver has one or two analogue 0-10V outputs. The height of the output values depends on the data transmitted from the sensors. The SRC-AO Multi works as a converter, which outputs the values of a data byte of an EnOcean telegram proportional to the analog outputs. This allows EnOcean sensors in a simple way to evaluate and / or integrate into existing systems.

To more information see the link:

http://www.enoluz.com/generic01-pack-en020561srcao1-p-553.html