Starting at $720.00 Starting at $648.00
  • Usually ships in 3-4 weeks



  • Up to 5 gases simultaneously
  • Bluetooth communication with iOS & Android App
  • 2 button operation
  • Non compliance indicator
  • 3 user adjustable alarm levels
  • Panic alarm
  • Man down alarm
  • Impact resistant body


The RKI Instruments GX-3R Pro Gas Detector is the world's smallest 5-gas monitor weighing only 4.58 ounces and fits in the palm of your hand (2.9" W x 2.6" H x 1.06" D). It simultaneously monitors and displays 5 different gases. In addition to monitoring standard confined space gases, LEL, O2, CO, & H2S, the GX-3R Pro has a 5th channel where you can add infrared or toxic sensors. Two of the four sensor slots have interchangeable sensors providing flexible configurations, which can easily be changed in the field.

The GX-3R Pro comes equipped with Bluetooth wireless communication, man-down alarm, the choice of alkaline or rechargeable power supply, and a 3 year warranty. The Lithium-ion battery pack will operate for 25 hours and will fully charge in 3 hours.

Applications for the GX-3R Pro include:

  • Personal monitoring
  • Confined spaces
  • Refineries/petrochemical
  • Utilities
  • Oil and gas
  • Water/wastewater
  • Fire services
  • Construction