Series CDX Wall Mount Carbon Dioxide Transmitter

Measures up to 2000 ppm, Adjustable Output

The Series CDX Carbon Dioxide Transmitter is a low cost and high performing CO2 sensor. This product will provide immediate energy savings by functioning in conjunction with building automation systems and allowing the user to effortlessly and effectively control fresh air into preferred areas. On-Demand ventilation using CO2 sensors prevents energy losses from over ventilation while maintaining indoor air quality. The potential for the greatest energy saving occurs in areas where occupancy alters over the duration of the day. The Series CDX Transmitters utilize the patented Automatic Background Calibration (ABC) Logic self-calibration system. ABC Logic virtually eliminates the need for manual calibration in applications where the indoor CO2 level drops to outside levels during unoccupied periods. If the transmitter is being used in an application where a building is continuously occupied 24 hours per day, then the user will permit that the ABC Logic feature be turned off.

Product Applications

  • On Demand Ventilation

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

Model Description Usually Ships* Price Order
Ships: Consult Factory
Price: $239.00
CO2 Ventilation Controller With Current Wiring, European Housing Consult Factory* $239.00 Order
Ships: Consult Factory
Price: $239.00
CO2 Ventilation Controller With Voltage Wiring, European Housing Consult Factory* $239.00 Order


0 to 2000 PPM.
±30 PPM or 3% of reading, whichever is higher. CO2 accuracy statement excludes standard gas used for calibration that has an accuracy of 2% and there is a potential digital to analog error of up to 1%.
Temperature Dependence:
0.2% FS per °C (± 0.11% per °F).
< 2% of FS over life of sensor (15 years).
Pressure Dependence:
.135% of reading per mm of Hg.
Response Time:
5 s.
Warm Up Time:
< 2 min (operational), 10 min (max. accuracy).
Temperature Limits::
Operating: 32 to 122°F (0 to 50°C); Storage: -40 to 158°F (-40 to 70°C).
Humidity Limits:
0 to 95% relative humidity, non-condensing.
Power Requirements:
18 to 30 VAC RMS, 50/60 Hz, or 18 to 42 VDC, polarity protected.
Power Consumption:
.7 W @ nominal voltage of 24 VAC RMS.
Non-dispersive infrared (NDIR) absorption.
Analog, 0 to 5 V or 0 to 10 V jumper selectable (100 Ω output impedance), 4 to 20 mA (RL maximum 500 Ω).
Flammability classification UL94 5VA.
European Housing: 5.44 oz (154 g); North American Housing: 6.24 oz (177 g).
Agency Approvals:


Model Number Description Usually Ships* Price Order
1552 Outside Air Measurement Enclosure 3-4 Weeks $297.00 Order


Product Literature


Catalog Pages



Photo Downloads

You must be logged in to view this content.
Click here to login to your account.

Product Reviews

Only registered users can write reviews. Please Sign in or create an account