AirLink 9850 Wireless Receiver / Interface for Fixed Gas Detection Systems

AirLink 9850 Wireless Receiver / Interface

255 Channel Wireless Receiver / Interface


  • 255 Channel wireless interface – all addresses on
    configured network
  • Radio options: 900 MHz radio or 2.4 GHz Standard
  • 12 to 35V DC operating voltage with optional AC
    power supply
  • Graphical LCD with LED backlight
  • Operating temperature range of -40ºC to +70ºC
  • 4 Push button interface (ADD, MENU, SUB, and RESET/ESC)
  • Individually configurable low and high alarm set
    points per channel
  • Status LEDs for power and fault multi color status light; Amber fault LED for indicating system faults
  • Output options: Wet contact fault DC fault terminal; USB virtual COM port; RS-232 or RS-485 Modbus; Website for displaying readings, alarms, faults, and sensor information; Optional 4-20 mA out put of 8, 16, 24, 0r 32 channels
  • NEMA 4X Fiberglass non explosion proof enclosure with clear lid
  • 1 Year limited hardware warranty
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The RKI Instruments 9850 Interface wireless receiver is capable of monitoring all 255 wireless addresses and converting the signals to a RS-232 or RS-485 Modbus output. Designed to be used in conjunction with an existing PLC, computer or SCADA system currently in place. Other digital outputs include Ethernet-to-Website and USB Virtual COM PORT. If analog output is required, an optional Analog Card is available and provides a 4-20mA output for up to 32 wireless sensors.

The AirLink 9850 Interface Wireless Receiver 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
  • Chemical plants
  • Construction
  • Temporary or permanent applications


Product Type Wireless interface
Operating Voltage 12V to 35V DC or 120V AC
Current Draw 800 mA Maximum at 120V DC
Power Type Wireless power
Power Supply 3.13A (75W), 85/264V AC to 24V DC (optional)
RF Connection External N female radio frequency (RF) connector
Protection Power electromagnetic interference (EMI) filter

4-20 mA surge suppression

RS-485 and RS-232 surge suppression

Display Screen 128 x 64 Resolution graphical LCD screen

transflective (sunlight readable) with LED backlight

Interface 4 Push buttons (Menu, ADD, SUB, and RESET/ESC)
Temperature Range -40°C to +70°C
Wireless (Digital) Input Up to 255 Wireless (Digital) sensor inputs
Wireless (Analog) Output RS-232 Modbus and RS-485 Modbus, ethernet to website, and virtual COM port over USB
Product Compatibility Wireless: All AirLink 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
Wiring Hubs Supplied with two 3/4” conduit hubs on bottom of housing. Can be located on sides or top if specified when ordering.
Accessories Optional horn and/or strobe on housing (uses 1 or 2 of available relays)
Product Dimensions 10 in, L x 8 in. D x 6 in. H (Max. dimensions with attachments)
Total Weight 8.90 lbs
Product Mounting 4 Mounting feet, 6 in. W x 12-1/4 in. T (included)

maximum mounting bolt/screw size of 5/16 in. (8mm) diameter

Product Add On Hardware OI-4200 PCA, 8 Channel 4-20 mA output add on board capacity;
4 maximum per OI-9850
Hardware Warranty 1-Year limited

Specifications subject to change without notice.
Made in the USA

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