Starting at $3,760.00
  • Usually ships in 1-2 weeks



  • -40° to 60°C (-40° to 140°F) operating temperature
  • Output options:
    • 900 MHz or 2.4 GHz radio
    • 4-20mA (3-wire) analog
    • RS-485 modbus
  • Graphical LCD with LED backlight
  • Two Individually configurable alarms
  • Two Front panel LED indicators (amber and red)
  • Hazardous location approvals:
    • Class I, Division 1&2, Groups B,C&D
    • Nema 3,4,4X,7(B,C,D)9(E,F,G) - Enclosure only
  • 1-Year warranty for electronics and sensor


The RKI Instruments AirLink T3A Wireless Gas Detector uses an electrochemical, infrared, catalytic bead sensor element to detect a variety of gases. Wired power (12 to 35 VDC) with wireless communication controller, the T3A also has 4-20 mA analog and RS-485 Modbus outputs as standard. Magnetic switches allow for non-intrusive calibration while in the field as well as full system settings and diagnostics.

Example Applications:

  • Petrochemical plants
  • Refineries
  • Water & wastewater treatment plants
  • Pulp & paper mills
  • Manufacturing facilities
  • Chemical plants