• 72-2108RK
  • Usually ships in 7-10 business days



  • Simultaneous readout on 8 channels
  • Accepts any 4-20mA transmitter
  • 2 large backlit digital displays
  • 115 / 220 VAC or 24 VDC operation
  • 3 programmable alarm levels per channel
    • Audible alarm with silence feature
    • Option for red strobe light
  • 2 configurable relays per channel
  • Weather & corrosion resistant NEMA 4X enclosure
  • CSA & C/US approved


The RKI Instruments Beacon 800 gas controller allows users to simultaneously control up to four gas monitoring channels while displaying the gas type, readings and status of each channel. With the ability to monitor and control any combination of direct connect sensors (LEL, O2, CO2 and toxic gases), this RKI Instruments gas controller can also accept and monitor any 4-20mA transmitter (2- or 3-wire).

Two relays per channel, plus one set of common relays, give the RKI Instruments Beacon 401A gas controller added customization. Relays are fully programmable for increasing or decreasing alarms, latching or self reset, normally energized or normally de-energized and time delay for alarm on and alarm off. Each channel also provides a 4-20mA output signal and a digital Modbus interface gives the 401A remote data logging capabilities via a Modbus network. A fully configurable strobe is available as an option. The min-max feature retains high and low peak readings for review at any time.

This RKI Instruments gas controller can be powered from 115/220 VAC, or an external 24 VDC source. A trickle charging battery backup feature with battery assembly is also available as an option. All features and functions of the Beacon 800 are controlled by easy-to-use menus on the OLED display. Additionally, all features including form-C relay contacts of the are built into the unit eliminating the need for add-on components or accessories.