Starting at $3,755.00
  • Usually ships in 1-2 weeks



  • 900MHz or 2.4GHz radio frequencies
  • Networks: (255 addresses per network)
    • 52 networks (900MHz radio)
    • 78 networks (2.4GHz radio)
  • 12 to 35V DC operating voltage
  • Graphical LCD with LED backlight
  • 3 Push button interface
  • Aluminum enclosure
  • Hazardous location approval:
    • Certified explosion/flame proof CQPSUS
    • Class I, Div 1, Groups C & D


The RKI Instruments AirLink 9900 signal repeater is a wireless device that receives transmissions from a wireless sensor or switcher and repeats the transmission to its corresponding monitor or controller within the wireless network. Enables greater distances and reliable communication between the gas detector and the gas monitor.