RKI GX-3R Gas Detector WiFi It communicates over Modbus RTU

It communicates over Modbus RTU (RS485) and runs on Seametrics' free Aqua4Plus software

chemical- and weather-resistant NEMA-4X enclosure

Additional configurations are available by quote — see our full RKI Instruments Parts & Accessories collection

groundwater and effluent

Groups C&D for hazardous locations and rated -40°C to +60°C

RKI GX-3R Gas Detector WiFi It communicates over Modbus RTUThe RKI GX 3R is the world's smallest 4 gas monitor, small enough to clip within OSHA's defined breathing zone while still covering LEL, O2, CO, and H2S. Dual filament catalytic combustible sensing pairs with a 3 5 year electrochemical O2 sensor, and an H2 compensated CO option and combo H2S CO micro sensor are available for facilities that need to filter out cross interference. SPECS MANUAL Sampling is diffusion based by default, with an optional