Riken Keiki GX-3R Portable Gas Detector is a compact, lightweight personal gas monitor designed for worker safety in confined spaces and hazardous environments. Capable of simultaneously detecting four gases — combustible gases (LEL), oxygen (O₂), carbon monoxide (CO), and hydrogen sulfide (H₂S) — the GX-3R ensures reliable monitoring for industrial applications. With its world’s smallest and lightest design, robust construction, and advanced sensor technology, the GX-3R provides fast response times and stable performance even in harsh conditions. It features audible, visual, and vibration alarms to alert users of gas hazards and offers extended battery life for continuous operation.