Transmitter CD-400

CD-400 series are transmitters with relay. Wired 8 lines-2 lines for power, 2 lines analog output, 2 lines for relay-of which reading range and calibration could be chosen as needed.

∙ Application: Automatic indoor ventilation system, Agricultural

∙ CO2 Measurement Range : 0~2,000ppm (3k,5k,10k Optional)

∙ Accuracy : CO2 3% ±50ppmof reading (ACDL Mode : 3% ±30ppm of reading)

                 Temperature ±0.4℃ (-40~100℃)

∙ Input Power : 4wired 24VAC ± 20%, 50/60Hz / 3wired 24VDC ± 20%

Output : 0~20/4~20mA, 0~10/2~10V (Optional) / SPST Relay


ELT sensor is a company located in Korea and leads gas sensor technology with 20 years of experience and top technology in the NDIR gas sensor field.

This module is a "carbon dioxide" gas measurement module with non-dispersive infrared (NDIR) method.

It guarantees high accuracy and long-term stability through the development and production of its own sensors.

It provides high quality by shipping after individual correction and correction work before product release.

Carbon dioxide measurement sensors are environmental sensors such as indoor air quality monitors, air purifiers, building management, automobiles, livestock, industries, public places, agricultural use, CA storage, HVAC, and medical care.

Carbon dioxide concentration monitoring can manage and supervise carbon dioxide levels to prevent carbon dioxide poisoning and maintain comfortable indoor air quality. It can also be applied to vehicles, schools, and library offices to prevent drowsiness.

It supports Analyst A-out output (4-20 mA (default), 0-20 mA, 0-10V, 2-10V) and provides SPST Relay, which can be easily applied to PLC and PC for use in industrial sites.