Groundtech GR-4 Series

The New Dimension of Exploration

The new-generation GR-4 is an advanced ground scanning and detector system that allows you to detect underground anomalies, perform 3D analysis, and instantly evaluate results.

It offers integrated, multifunctional solutions for professional treasure hunters, archaeological researchers, and anyone who wants to work with high accuracy in underground structures.

With its dual-sensor 3D ground scanning system, the GR-4 detects, measures, and locates all targets, from buried metals and magnetic objects to cavity structures such as tombs, chambers, and tunnels.

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

The device can operate independently without needing a phone or tablet. Its built-in color display allows you to view all scanning modes, settings, and results directly on the device. This allows for independent operation without the need for a phone or tablet.

If you wish, you can save your scan data with the G-PORTAL mobile app, analyze 3D and 4D analyses in more detail, and generate comprehensive reports.

This device offers both fast and practical standalone use and advanced analysis capabilities with the mobile app.

Thanks to its foldable modular body, adjustable grip angle, and removable sensor module, the GR-4 is a leader in its class in terms of ease of transport and field compatibility.

GR-4 DUAL

The GR-4 Dual model in the series is equipped with an integrated Pulse Induction (PI) detector system in addition to its 3D ground scanning capabilities.

This technology provides superior performance, especially in areas where standard detectors struggle, such as highly mineralized ground, salty soils, and coastal areas.

The PI system can detect deep targets without being affected by mineral density or soil structure.

This allows for the detection of large metal masses, buried precious metals, or deep void structures with much clearer and more stable signals.

Thanks to its modular design, the GR-4 Dual easily integrates a PI search coil into the magnetic sensor compartment, enabling conversion. This allows for both 3D ground scanning and professional PI detector search with a single device.

This feature offers users two powerful technologies simultaneously, without having to carry two separate devices.

As a result, the GR-4 Dual offers a complete solution for multi-purpose fieldwork, deep searches, and challenging terrain.

Technical Specifications

GR-4

GR-4 DUAL

System

3D Ground Scanner

3D Ground Scanner and Integrated Pulse Induction Metal Detector

Sensor Technology

MFS-2 Dual Sensor Technology (Gradiometer) ± 2000 µT

MFS-2 Dual Sensor Technology (Gradiometer) ± 2000 µT

Detector Technology

-

Pulse Induction Technology – 1 kHz Frequency

CPU

240 MHz CPU - 12-bit A/D Converter

240 MHz CPU - 12-bit A/D Converter

Scanning Modes

3D Ground Scan, Live Scan, Pinpointer

3D Ground Scan, Live Scan, Pinpointer, Detector Quick Scan, Detector Advanced Scan

Analysis Application

G-Portal Android & iOS 3D/4D Analysis Software

G-Portal Android & iOS 3D / 4D Analysis Program

Depth

3D Scanning System up to 15 meters deep**

3D Scanning System up to 15 meters deep**

Detector System up to 3 meters deep***

Wireless Connection

Bluetooth 4.2 BLE

Bluetooth 4.2 BLE

Language

Device 11 languages, Mobile App 25 languages

Device 11 languages, Mobile App 25 languages

Battery

3.7V Li-ion rechargeable battery

3.7V Li-ion rechargeable battery

Operating Time

3D Scanning System approximately 10 hours

Pulse Induction Detector System approximately 6 hours, 3D Scanning System approximately 10 hours

Operating Temperature

0°C - 70°C

0°C - 70°C

Storage Conditions

-20°C - 60°C

-20°C - 60°C

Charging

Type-C 25W charging adapter

Type-C 25W charging adapter

Warranty

2 years

2 years

Weight

Dimensions

* Depth values ​​vary depending on soil type, mineral content, target size, and burial time. The values ​​given represent maximum capacity.