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Industrial Infrared A2L and A3 Refrigerant Gas Sensor-AM4203 SeriesAM4203 Series

AM4203 Series is focused on NDIR refrigerant gas sensor that offers industrial grade accurate and reliable detection of A2L gases (including R32, R454A, R454B and R454C), and A3 gas R290.
Based on NDIR (Non-Dispersive Infrared) technology, AM4203 Series could detect and monitor refrigerant gas leakage and provide early warning. It has the advantages of fast response, excellent accuracy and good long-term stability. Full auto baseline calibration mechanism also secure free of maintenance during its life span.
To adapt for industrial and commercial multi-drop communication application, AM4203 Series is extended with 12/24 VDC power supply, RS485 and Modbus communication. It could fulfill more efficient integration with industrial refrigerant monitoring systems.
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  • Dual-beam NDIR technology
  • 0-100% LFL measurement range for refrigerant gases
  • Excellent accuracy over full meaurement range under matrix calibration
  • Advanced auto baseline calibration mechanism
  • Industrial grade 12/24VDC power supply, RS485 and Modbus communication
  • Long life span of 15 years
  • OEM and ODM flexible service
  • Fulfillment with UL 60335-2-40 requirements


CO2 Sensor CM1106-C
Principle Dual-beam NDIR
Measurement Range 0~50% LFL (Extendable up to 100% LFL)
Resolution 1%LFL
Accuracy ±2.5% LFL up to 25%LFL; ±5% LFL or 10% indication above 25%LFL
Response Time <30s
Communication RS485, Modbus
Working Environment -20~60℃;0~95%RH(non-condensing)
Power Voltage 12/24V DC
Average Current 500mA
IP Grade IP54(Optional:IP65 )
Life Span 15 years
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