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Air quality monitor with Relays—AQ-Control
The AQ-Control carbon dioxide measuring system is specially designed to monitor indoor air quality. With the aid of two independent relay contacts, it can control automatic window openers, air conditioning systems and fans.

AQ-Control quickly and accurately detects the carbon dioxide content in the air mixture within an ambient temperature range of -10 to +50° C.Its interior contains a revolutionary infrared measuring system (NDIR) that works in principle in the same manner as a conventional two-beam photometer. However as the material and design of the sample cell are entirely new, and the measurement signals are evaluated and processed according to a new digital algorithm, the carbon dioxide measuring system is lightweight, compact, maintenance-free in normal applications and long-term stable, but nonetheless affordable. The elegant housing is made of plastic and can be mounted on a wall or straight onto a flush-mounted box.