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Macurco CD-12H Carbon Dioxide CO2 Fixed Gas Detector Controller Transducer, Auto Calibration


Macurco | SKU: CD-12H | Model: CD-12H

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The CD-12H is a line voltage, dual relay Carbon Dioxide (CO2) detector, and automatic ventilation controller. The CD-12H uses a microcomputer controlled, electronic system to measure the concentration of CO2, actuate relays and provide a 4-20 mA output. The CD-12H has a low maintenance long life (15+ years) non-dispersive infrared (NDIR) sensor and optional gas test/calibration kits. The CD-12H is a low-level meter capable of displaying from 0-5000 ppm of carbon dioxide.


  • ETL LISTED to UL 61010-1, Certified to CAN/CSA Std. C22.2 No 61010-1
  • Low level meter capable of displaying from 0-5000 ppm of CO2
  • Sensor Resolution of 50 PPM
  • Selectable fan and alarm relay activation
  • 5 A SPDT fan relay controls starters of ventilation
  • 0.5 A N.O. or N.C. alarm relay connects to warning devices or control panels
  • 4-20 mA Current Loop
  • Mounts on a standard 4x4 electrical box and becomes cover for the box
  • Supervised system: any internal detector problem will cause the fan & alarm relay to activate
  • Carbon Dioxide sensor has an expected 15-year life. EOL indicator after 180 months of sensor power-up
  • Calibration verification test kit is available
  • Easy access, one screw removal allows for gas test and configuration

Additional Information

Product SKU CD-12H
Brand Macurco
Condition New
Type Hardwired
Scene Indoor, Outdoor