Groundtech GR-4 Series

A New Dimension of Discovery

The next-generation GR-4 is an advanced ground scanning and detection system that allows you to identify underground anomalies, perform 3D analysis, and evaluate results instantly.
It offers integrated, multi-functional solutions for professional treasure hunters, archaeological researchers, and anyone who needs high-precision underground exploration.

Featuring a dual-sensor 3D ground scanning system, the GR-4 detects, measures, and pinpoints all types of targets—from buried metals and magnetic objects to cavities such as graves, rooms, and tunnels.

Thanks to its high-resolution color display, you can instantly view, analyze, and clearly identify targets in Live Scan, Pointer, and 3D ground scanning modes.

The device operates independently without the need for a phone or tablet.
With its built-in color display, all scanning modes, settings, and results can be viewed directly on the device, ensuring completely standalone use.

If desired, scanning data can be saved using the G-PORTAL mobile application, allowing for detailed 3D and 4D analysis with comprehensive reporting.
This provides both quick and practical standalone use, as well as advanced analytical capabilities through the mobile app.

The foldable modular body structure, adjustable grip angle, and detachable sensor module make the GR-4 a class-leading device in portability and field adaptability.

GR-4 DUAL

The GR-4 Dual model includes all the advanced features of the GR-4, with the addition of an integrated Pulse Induction (PI) detection system.
This technology delivers outstanding performance in areas where standard detectors struggle—such as high-mineral soils, salty ground, and coastal regions.

The PI system can detect deep targets without being affected by mineral density or soil structure.
This allows large metal masses, buried valuables, and deep cavities to be detected with strong and stable signals.

With its modular design, the PI search coil can be easily mounted onto the sensor module where the magnetic sensor is placed.
Thus, a single device enables both 3D ground scanning and professional PI metal detection.

In summary, the GR-4 Dual offers a complete solution for multi-purpose fieldwork, deep searches, and challenging terrain—without the need to carry multiple devices.

Technical Specifications

Note: Depth values depend on soil type, mineral density, target size, and burial time. Listed values represent maximum capacity.