CMWN series


CMWN & CMD Carbon Monoxide (CO) Transmitter/Controller

Application & Features

  • It’s necessary to control the ventilation of car park and vehicle maintenance and test work shop according to many building HVAC regulations. Considering of energy efficiency, demand controlled ventilation (DCV) is recommended to provide enough fresh air according to CO concentration and temperature. CM transmitter and controller are designed for these applications. It can effectively control the ventilation system to safety and energy-saving operations
  • Environmental friendly electrochemical sensor gives good long term accuracy, sensitivity and reliability
  • Better than most other similar sensors, it gives more than 7-10 years sensor life to protect customer’s investment
  • Better than most other similar sensors which maybe need recalibration every 6-12 months, it only need periodical recalibration as long as 3-5 years or more, maintain 5% accuracy
  • All electrical terminals are on the inside bottom, avoid any possible destroy to PCB when wiring (for CMWN)


  • CO sensorElectrochemical gas sensor
    — Range0~100ppm or others (0-400ppm)
    — Accuracy: ±5% @ 0-400ppm
  • Temp. SensorDigital Sensor (CMWN) Thermistor (CMD)
    — Range0~50°C
    — AccuracyCMWN= ±0.5% @0~50°C(≥1m/s air flow) &
    CMD= ±0.5% @25°C (≥1m/s air flow)
  • Output4~20mA (3 wires), 0~10VDC, RS485/Modbus;
    OUT1:T, OUT2:CO