The CD-6B is a low voltage (12-24 VAC/VDC) monitor that provides three alarm levels using three separate relays for controlling external devices. This helps to maintain acceptable levels of Carbon Dioxide in the beverage and food industries, greenhouses, pharmaceutical, and other chemical processing or other commercial applications. The CD-6B can be used as a stand-alone unit or connected to a burglar/fire panel. The monitor has a high range of 0-5% by vol. (0-50,000PPM) with a recommended coverage area of 900 - 5000 sq. ft.