VENTS-US CO2-2 Carbon Dioxide Sensor for Continuous Ventilation (SKU CO2-2-SENSORS)

The VENTS-US CO2-2 sensor measures carbon dioxide levels in the space and adjusts ventilation to match. When CO2 climbs, the fan speeds up. When the room clears out, it backs off.

The CO2-2 has no LED indicators or on/off button, which makes it the right pick for schools, libraries, and other public spaces where ventilation should run continuously and occupants shouldn't be able to shut it down. If you want visible CO2 level indication and manual override, use the CO2-1 instead.

Works with any ventilation system that accepts an external control signal. A relay output switches the fan on and off, and a 0-10V analog output gives smooth speed control on EC motor units. Requires a 24 VAC supply.

Product Features:

• CO2 Demand Control: ventilation responds to actual occupancy instead of running at a fixed speed
• Built for Continuous Ventilation: no manual off switch, suited to classrooms and public spaces
• Relay and Analog Outputs: on/off switching plus 0-10V speed control, adjustable to 2-10V, 0-20mA, or 4-20mA
• Self-Calibration: holds accuracy without manual recalibration
• Wall Mounted: surface mounts in the space being monitored

Warranty

Backed by the VENTS-US manufacturer warranty.