OKM Fusion Professional 3D Ground Scanner with SRIS Coil

The OKM Fusion Professional is a 3D ground scanner and metal detector from OKM's Fusion series for treasure hunters, cavity seekers and archaeologists who want to see what is under a site before they dig. It pairs two operating modes, 3D Ground Scan and Live Sound (magnetometer), with an SRIS search coil for metal close to the surface, and ships with a pre-configured Windows notebook running Visualizer 3D Studio and Bluetooth headphones. OKM reports that customers have located objects as deep as 21 m (69 ft) with this technology, depending on the size of the target and the ground.

What is in the box with the OKM Fusion Professional

OKM's standard contents for the Fusion Professional

• Fusion Professional control unit with SCMI-15-D sensor and SRIS-18K search coil
• Pre-configured Windows notebook
• USB flash drive with OKM Visualizer 3D Studio Standard Edition
• Bluetooth headphones with charging cable
• Charger with charging cable
• Travel adapter set
• Waterproof and shock-resistant protector case
• Quick start guide

Two operating modes, one vertical probe

The Fusion Professional probe is used in vertical orientation only. You carry the control unit in one hand and the notebook in the other, and choose the mode during setup.

Live Sound (magnetometer): an acoustic magnetic field measurement that picks up ferrous metals in real time through the Bluetooth headphones. OKM recommends running Live Sound over a site first to find iron near the surface, so small surface objects do not clutter the scan image of deeper targets.

3D Ground Scan: you walk the scan field in lanes, and Visualizer 3D Studio turns the measurements into a color 3D graphic. That image is where you judge whether an anomaly could be a buried object, such as a chest or cache, or a structure like a cavity, tunnel or burial chamber, and estimate how deep to dig. Large objects and voids read much deeper than coin-size items; our guide on how deep metal detectors really go explains why target size matters so much.

The SRIS search coil

The SRIS coil is an inductive search coil for metal close to the surface, and you switch it on manually while setting up Live Sound or 3D Ground Scan. OKM names rings, earrings, brooches, coins, buttons, badges and pins among the small items it helps you find.

Scan data goes to the pre-configured notebook over Bluetooth 5.1. If you also install Visualizer 3D Studio on your own computer, check it against the minimum requirements below. For other deep-target methods, see our deep seeking metal detectors.

Who the OKM Fusion Professional suits

What we like about the Fusion Professional is that it expands the Fusion platform with additional investigation tools. The key difference from the Fusion Light is the SRIS search coil included with the Professional.

What the SRIS coil adds

Picture finding an anomaly during a broader 3D Ground Scan and wanting to investigate a smaller spot. The SRIS coil gives you a localized way to check for metal close to the surface, including the soil you dig out of the hole. We would not suggest it positively identifies gold or other valuable metals.

Reviewing scans in Visualizer 3D Studio

We particularly like being able to review results in OKM's Visualizer 3D Studio after the survey is done. Interpreting that data takes experience, and operator technique and ground conditions matter as much as the hardware.

Fusion Professional or Fusion Light

We would recommend the Professional when a customer specifically needs its additional hardware and the more involved investigation workflow. For a simpler introduction, the Fusion Light may be enough.

One mistake to avoid with the Fusion Professional

Assuming the Professional configuration automatically produces more accurate results in every situation. Technique and ground conditions still decide the quality of a scan.

Our recommendation on the OKM Fusion Professional

We recommend the Fusion Professional to customers who want additional investigation tools within the Fusion platform. Its strongest point is 3D ground scanning combined with SRIS based search on the spot.

Permission and protected sites

We would get the landowner's permission before any survey and check the laws that protect historic sites, archaeological sites and burials where you plan to scan. A ground scanner can show where something is different underground; it does not tell you whether you may dig there.

OKM Fusion Professional specifications

OKM covers the Fusion Professional with a 2-year warranty. Serious Detecting is an authorized OKM dealer, and we can help you set up the notebook and software before your first survey.

Both Fusion models we carry are in our OKM Fusion collection, the full range is in our OKM collection, and our 3D imaging metal detectors collection compares ground scanners across brands.