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SenSmart 3400 IR CO2 Gas Detector

  • SenSmart 3400 in Aluminum Enclosure
  • SenSmart 3400 in Poly Enclosure
    SenSmart 3400 in Poly Enclosure
  • SenSmart 3400 in Stainless Steel Enclosure
    SenSmart 3400 in Stainless Steel Enclosure

The SenSmart 3900 3-wire gas detector is built with our reliable ‘ST-48’ smart transmitter, which provides the cutting-edge technology in toxic and combustible gas detection. It’s a universal, easy to use detector that supports Infrared Carbon Dioxide sensors.



  • CSA Certified for Class I, Div 1 Locations
  • Graphic LCD display shows values, units, trend graph, alarm levels
  • Backlit display for better visibility in low light conditions
  • LED indication of alarm status
  • Supports both local and remote sensors for easy installation
  • Non-intrusive, prompted calibration with programmable cal-gas
  • Power-up and post-calibration delays eliminate false alarms
  • Options for 3x 5A alarm contacts, isolated 4-20mA and MODBUS®
  •  Auto-recognition of Smart Sensors uploads calibration data and more
  • Real-time clock and calendar logs alarms, calibration and power-up events
  • Security mode allows locking of critical parameters
  • Fault supervision circuitry detects failed sensor and transmits warning
  • Setup in hazardous area requires only simple magnetic wand

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