OKM Fusion Light

The Fusion Light is the smallest and lightest machine in OKM's Fusion family: a single carbon rod measuring 800 × 65 × 65 mm and weighing about 700 g, with no separate control box, no harness and no shaft to assemble. Inside it OKM fits its SCMI-15-D sensor technology, a Cortex M3 32 MHz main processor with a Cortex M0 24 MHz slave, and a measurement chain that samples 1,024 values per second at 16-bit resolution. It runs two operating modes. Magnetometer is the one you will use first and most: a live scan that reads anomalies in the earth's magnetic field and reports ferrous material — iron boxes, nails, casings, buried ordnance — audibly and on screen as you walk. This is how experienced operators clear a plot of shallow iron before committing to a full survey, and it is genuinely testable hardware you can prove to yourself on the first afternoon. 3D Ground Scan is the survey mode: you walk numbered parallel lines, the rod records a grid of measurement points, and the scan builds on the phone display in real time. Everything is driven from the Android smartphone that ships in the case, linked to the rod over Bluetooth 5.1 at roughly 10 m, so there is no proprietary console to learn or replace. Completed scans transfer to the Windows notebook that is also included, where OKM Visualizer 3D Studio — a Standard Edition licence is supplied — renders them as rotatable three-dimensional graphics for judging the position, extent and relative depth of an anomaly before you dig. A 2,600 mAh lithium-ion battery gives roughly 12 hours of field time and recharges in about 3 hours, and the whole kit travels in a waterproof, shock-resistant Protector case. Two points to be clear about. The rod itself is rated IP40 and OKM states plainly that it is not waterproof, so this is a dry-ground instrument. And OKM's headline figure — that customers have found objects down to 8 m (26 ft) — is the manufacturer's own customer report rather than a measured specification; real results depend entirely on soil, target size and scan discipline. The Fusion Light is an anomaly-mapping instrument: it shows you where the ground differs, it does not identify metal type or give a conductivity number the way a coil-based VLF detector does.