Greystone CDD Carbon Dioxide Detectors
Environmental, industrial and commercial indoor Carbon Dioxide (CO2) gas detector.
Available in space, duct and outside mount versions with a variety of options such as temperature and humidity sensors, LCD, and alarm relay outputs.
why buy from us?
We're engineers passionate about home ventilation and serious about customer service – so you can count on us for carefully-selected equipment and expert advice to ensure your project is a success from specification to installation.
Your call is answered by qualified people who will gladly discuss your project in detail, advise you professionally and never sell you inappropriate products.



