AirLink 7543 Six Channel Controller for Fixed Gas Detection by RKI Instruments

AirLink 7543 Wireless Controller

Airlink 7543 Controller

6 Channel Wireless Control Panel


  • 6 Channel controller accepts up to 6 wireless
  • Radio options: 900 MHz or 2.4 GHz radio standard
  • 3 Programmable alarm set-points
  • 3 Dry-contact alarm relays
  • Status indicator for fault conditions: Amber LED
    indicator for system faults
  • Graphical LCD with LED backlight
  • 12 to 35 VDC operating voltage with an optional AC power supply
  • Operating temperature range of -40ºC to +70ºC
  • NEMA 4X standard fiberglass enclosure with clear lid
  • Output options: RS-485 Modbus or optional WirelessHART®
  • 1-Year limited hardware warranty
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The RKI AirLink 7543 six channel gas monitor with 3 dry contact relays can monitor up to 6 individual Wireless gas detectors and transmitters. RS-485 Modbus output allows for data communication to a PLC or other system monitoring device. Available with an optional WirelessHART® module that allows the received sensor readings to be viewable on a WirelessHART® network.

The AirLink 7543 Gas Monitor represents the latest leading edge wireless technology in fixed gas detection today.

Related Services

Fixed Systems Turnkey Solutions

  • Design, Consultations, and Engineering
  • Installation
  • Start-up
  • Training
  • System Maintenance



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


Product Type Gas monitor
Operating Voltage 12V to 35V DC, 120V AC optional
Current Draw 275 mA Maximum
Power Supply 3.13A (75W), 85/264V AC to 24V DC (optional)
Protection Power electromagnetic interference (EMI) filter
Display Screen 128 x 64 Resolution graphical LCD screen

transflective (sunlight readable) with LED backlight

Interface 3 Push buttons (Menu, ADD, and SUB)

3 magnetic non intrusive switches

Temperature Range -40°C to +70°C
Wireless (Digital) Input Up to 6 wireless sensor inputs
Output RS-485 Modbus,

optional WirelessHART® Module (disables RS-485 Modbus output)

Relays 3 Dry-contact relays with 4 amp replaceable fuses, wet contact fault terminal
Alarm Settings 3 Individually configurable alarm set-points per channel, (for gas alarms or fault)

Latching and non latching relay settings per channel

Product Compatibility All AirLink wireless gas detector head transmitters
Wireless Radio Options 900 MHz radio

2.4 GHz radio

Networks 52 Networks (900 MHz radio)

78 Networks (2.4 GHz radio)

255 Addresses per network

Enclosure Materials NEMA-4X fiberglass enclosure with clear window
Optional Accessories Horn and/or strobe (uses one relay). Power cord (AC version only)
Product Dimensions 8 in, L x 8 in. D x 4 in. H (Max. dimensions with attachments)
Total Weight 12.8 lbs
Hardware Warranty 1-Year limited

Specifications subject to change without notice.
Made in the USA

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