RKI GX-3R 4 Gas Monitor — the world’s smallest and lightest multi-gas detector, engineered for professionals working in confined spaces. At just 3.52 ounces and measuring 2.2" W x 2.55" H x 1.02" D, it can be clipped right in the breathing zone for constant, hands-free safety during every shift.
Experience comprehensive safety with simultaneous detection of four essential gases: LEL, O2, H2S, and CO, all displayed in real time on a compact, single instrument. This compact monitor keeps critical readings within easy reach, so your team stays aware without weighing them down.
Powered by advanced micro-sensors, the GX-3R features a dual-active-filament LEL sensor to resist silicone poisoning, a long-life electrochemical O2 sensor designed for 3–5 years of reliable service, and a combined H2S/CO sensor for efficient, accurate monitoring in rugged environments.
The instrument includes a practical non-compliance indicator that flashes three LEDs to alert supervisors about bump tests, calibration due dates, or gas alarm events, ensuring safety checks stay on track without interrupting work.
Safety is guaranteed with three user-adjustable alarm levels, featuring audible, visual, and vibration alerts so you never miss a warning, even in noisy or visually challenging settings.
With up to 25 hours of operation on a lithium-ion battery and field-replaceable sensors and filters, the GX-3R is built for long shifts and quick maintenance in the field.
RKI engineers durability into every detail: the GX-3R is designed to withstand demanding work sites with IP66/68 protection against water and dust, plus a rugged, impact-resistant body that keeps performing when the going gets tough.
In addition to its compact power, the GX-3R includes an AC charger suitable for standard outlets, including 115 V compatibility, so recharging between tasks is fast and simple.
Whether you’re entering confined spaces, working on construction sites, treating wastewater, or conducting mining operations, the RKI GX-3R 4 Gas Monitor provides dependable, multi-gas protection in a glove-sized package. Trust the GX-3R for precise readings, effortless operation, and a safety margin you can rely on.
