Groundtech GR-4 Dual 3D Ground Scanner and Integrated Pulse Induction Metal Detector

Take your exploration to the absolute limit with the Groundtech GR-4 DUAL. This elite, hybrid system integrates an advanced 3D Ground Scanner with a high-performance Pulse Induction metal detector, giving serious treasure hunters, archaeologists, and relic seekers two powerful technologies in a single, streamlined device.

Whether you need to map out deep subterranean voids like tunnels and chambers up to 49 feet (15 meters) deep, or rapidly search and discriminate metals in the upper layers of soil using a heavy-duty pulse system, the GR-4 DUAL provides the ultimate all-in-one field solution.

Key Features

• Dual-System Hybrid Technology: Seamlessly switches between high-depth 3D Ground Scanning (Gradiometer) and a powerful 1 kHz Pulse Induction Metal Detector.
• Expanded 6-Scanning Mode System: Includes 3D Ground Scanning, Live Scanning, Pinpointer Function, Detector Fast Scanning, Detector Advanced Scanning, and 3D Ground Scanning Detector Mode.
• Advanced Metal Discrimination: The Detector Advanced Scan mode lets you tune detailed settings to filter out trash, locate deeper targets, and clearly distinguish between ferrous and non-ferrous metals (like gold, silver, and copper).
• Extreme Depth Capabilities: Scan up to 15 meters (approx. 49 feet) deep using the 3D imaging system, and detect targets up to 3 meters (approx. 10 feet) deep using the integrated Pulse Induction system.
• Standalone Field Operation: No external smartphones or tablets are required to start hunting. View all settings, active scanning modes, and real-time color targets directly on the built-in HD color display.
• Deep 3D & 4D Data Analysis: Connect wirelessly to the G-Portal mobile app (compatible with iOS and Android) to view highly detailed, color-coded graphic visualizations, isolate target shapes, and generate comprehensive survey reports.

Technical Specifications

• System Type: 3D Ground Scanner (Gradiometer) & Pulse Induction Metal Detector
• Sensor Technology: MFS-2 Dual Sensor Technology (± 2000 µT)
• Detector Technology: Pulse Induction Technology (1 kHz frequency)
• Maximum 3D Scan Depth: Up to 15 meters (approx. 49 feet)
• Maximum Detector Depth: Up to 3 meters (approx. 10 feet)
• CPU / Processor: Fast 240 MHz CPU with a 12-bit A/D converter
• Display: Integrated HD color screen for standalone field use
• Wireless Connectivity: Bluetooth 4.2 BLE
• 3D Analysis Software: G-Portal Application (Android & iOS 3D/4D Analysis Program)
• Battery Type: 3.7 V Li-ion rechargeable battery
• Operating Time: Up to 10 hours in 3D Scanning mode / Approx. 6 hours in Pulse Detector mode
• Charging Interface: Type-C input (supports 25W fast charging adapters)
• Operating Temperature: 0°C to 70°C (32°F to 158°F)
• Multi-Language Support: 11 languages on-device / 25 languages via the mobile app
• Warranty: 2-Year Manufacturer Warranty

What’s Included in the Box?

• Groundtech GR-4 DUAL Main Unit (with integrated HD color display)
• MFS-2 Dual Sensor Module
• PiD35 detector search coil
• Heavy-Duty Field Carrying Bag
• Type-C Fast Charging Adapter
• User Manual & Official Warranty Documentation