GR-4 3D Ground Scanner
A simple, compact 3D ground scanner with an MFS-2 dual sensor that maps metals and cavities and shows them in 3D on your phone.
$1,850.00US dollars. Free shipping to US addresses.
- Type
- 3D ground scanner
- Scanning modes
- 3D Ground Scanning, Live Scanning, Pinpointer
- Depth
- Up to 49 ft (15 m), maker figure
- Operating time
- About 10 h
- New, sealed, with the full GroundTech warranty
- Free shipping to US addresses
- We confirm stock and delivery date before you pay
- 30-day returns on unused equipment
Questions about the GR-4 3D Ground Scanner? Ask us or call +1 (307) 370-3071.
Overview
The GR-4 brings 3D ground scanning to a far lower price than most scanners. Its MFS-2 dual sensor works as a gradiometer to detect, measure and locate buried metals, magnetic objects and voids such as graves, rooms and tunnels.
Results appear on the built-in screen while you scan, and the free G-Portal app for Android and iOS shows them as 3D and 4D graphics, separating magnetic metals (iron, steel) from non-magnetic ones (gold, silver, copper). Live Scan and Pinpointer modes help you narrow a target down.
Highlights
- 3D Ground Scan, Live Scan and Pinpointer
- MFS-2 dual sensor gradiometer
- G-Portal 3D/4D app for Android and iOS
- Depth up to 49 ft (15 m) by target size and soil, maker figure
- About 10 hours per charge
Specifications
| Type | 3D ground scanner |
|---|---|
| Scanning modes | 3D Ground Scanning, Live Scanning, Pinpointer |
| Depth | Up to 49 ft (15 m), maker figure |
| Operating time | About 10 h |
| Sensor | MFS-2 dual sensor (gradiometer), +/- 2000 microtesla |
| CPU | 240 MHz, 12-bit A/D |
| 3D analysis | G-Portal app for Android and iOS (3D/4D) |
| Wireless | Bluetooth 4.2 BLE |
| Battery | 3.7 V Li-ion, USB-C 25 W charging |
| Languages | Device 11, app 25 |
| Warranty | 2 years |
In the box
GR-4 main unit, MFS-2 dual sensor, carrying bag, charging adapter, user manual.
Depth and range figures are the manufacturer's stated maximums. Results vary with soil, target size and conditions.
Specifications from GroundTech, checked October 2026.
