Groundtech A2 GEO 3D Ground Scanner & Metal Detector

The Groundtech A2 GEO is a 3-in-1 professional geophysical system for advanced archaeologists, utility locators, and serious treasure hunters. It combines a deep-seeking 3D ground scanner, an integrated 1 kHz pulse induction metal detector, and a Geo-Electric resistivity system in a single compact field instrument. With next-generation MFS-3 dual sensors reaching depths of up to 65 feet (20 meters), the A2 GEO locates buried metals, tombs, tunnels, caves, and even groundwater sources far beyond the limits of standard detectors, and it runs fully standalone on its built-in HD color screen.

Three Instruments in One Device

Switch instantly between the 3D Ground Scanning System for mapping buried metals, graves, rooms, and cavity structures, the pulse induction detector for fast metal detecting and discrimination in the upper soil layers, and the Geo-Electric resistivity system for ultra-deep subterranean mapping. No other unit in the Groundtech range covers this much ground with one tool.

Geo-Electric System for Water, Cavities, and Deep Structures

The A2 GEO's defining feature is its integrated Geo-Electric resistivity system (100 V, 66 mA output at 62 Hz with a 50 sample interval). Using four conductive probes and four 82-foot (25-meter) conductor cables, it detects groundwater sources, underground tunnels, ancient tombs, and caves from much deeper levels. Scanning runs quickly across four survey lines in both manual and automatic configurations, and results are analyzed in 3D through the Groundtech Suite application.

Eight Scanning Modes for Complete Exploration

The A2 GEO is equipped for any terrain with 3D Ground Scanning, Live Scanning, Pinpointer Function, Detector Quick Scan, Detector Advanced Scan, 3D Ground Scanning Detector Mode, Resistivity Automatic Scanning, and Resistivity Manual Scanning. The Detector Advanced Scan mode allows detailed settings, deeper detection, and clear separation of ferrous metals from valuable non-ferrous finds.

Perfect MFS-3 Dual Sensor Technology

High-sensitivity MFS-3 dual gradiometer sensors with a wide plus or minus 3000 microtesla measurement range deliver more sensitive and deeper scanning while minimizing the margin of error. Combined with a fast 240 MHz processor and 12-bit A/D converter, the A2 GEO renders precise, color-coded results in real time, graphically separating magnetic metals (iron or steel) from non-magnetic treasures (gold, silver, or copper).

Standalone Operation with 3D Analysis on Your Smartphone

No external phone or tablet is required to start your survey. Settings, modes, and instant scan graphics display directly on the integrated HD color screen. For deeper analysis, pair via Bluetooth 4.2 BLE with the G-Portal application for Android and iOS to visualize targets in full 3D, calculate depth, and isolate target shapes. The device supports 11 languages on-screen and 25 languages in the mobile app.

Factory Included Items:

• Groundtech A2 GEO Main Unit (with integrated HD color screen)
• MFS-3 Dual Sensor Module
• PiD25 Detector Search Coil
• PiD30 Detector Search Coil
• 4 Conductive Probes
• 4 x 82 ft (25 m) Conductor Cables
• Premium Audio Headset
• Type-C Fast Charging Adapter
• Heavy-Duty Field Carrying Bag
• User Manual & Official Warranty Documentation (2-Year Manufacturer Warranty)

Specifications:

Main Unit

• System type: 3D Ground Scanner, Pulse Induction Metal Detector, and Integrated Geo-Electric System
• Sensor technology: MFS-3 Dual Sensor Technology (Gradiometer), plus or minus 3000 µT
• Detector technology: Pulse Induction, 1 kHz frequency
• Resistivity system: 100 V, 66 mA output, 62 Hz, 50 sample interval
• Maximum 3D scan depth: up to 65 ft (20 m), depending on soil structure, object size, and scanning function
• Scanning modes: 3D Ground Scanning, Live Scanning, Pinpointer, Detector Quick Scan, Detector Advanced Scan, 3D Detector Scanning, Resistivity Automatic Scanning, Resistivity Manual Scanning
• Processor: 240 MHz CPU with 12-bit A/D converter
• Display: integrated HD color screen for standalone field use
• Battery: 3.7 V Li-ion rechargeable
• Operating time: approx. 6 hours in Pulse Induction Detector mode, approx. 10 hours in scanning and resistivity modes
• Charging input: Type-C (supports 25 W fast charging adapters)
• Operating temperature: 32°F to 158°F (0°C to 70°C)
• Storage temperature: -4°F to 140°F (-20°C to 60°C)

Data Transmission

• Technology: Bluetooth 4.2 BLE
• Connection: real-time transfer to smartphone or tablet

Analysis Software

• Mobile: G-Portal Application for Android & iOS (3D analysis)
• Resistivity analysis: Groundtech Suite Application
• Languages: 11 on-device, 25 in the mobile app

New to deep-seeking geophysical systems? Our Groundtech buyer's guide explains how the A2 GEO compares to the rest of the lineup and who each model is built for.