The RKI OX-600 is a compact, wall-mounted fixed oxygen monitor using a galvanic-cell sensor for stable, low-maintenance O2 detection across a 0-25% range, with 0.1% resolution and a 30-second T90 response. Two alarm levels trigger at 19.0% and 18.0% oxygen, driving a dry-contact relay and a 4-20mA output for building or process control integration.

Available in battery (2xAA), 24VDC, or 115VAC powered versions — with optional 3, 5, 10, or 20 meter remote sensor cables and a CSA-certified variant — the OX-600 is a low-cost fit for labs, cryogenic storage areas, clean rooms, confined spaces, tunnels, and parking garages where oxygen deficiency is the primary hazard.