GR-4 Dual
Everything in the GR-4 plus an integrated pulse induction detector with fast and advanced modes that separate ferrous from non-ferrous metal.
$2,450.00US dollars. Free shipping to US addresses.
- Type
- 3D ground scanner and pulse induction detector
- Detector
- Pulse induction, 1 kHz
- Scanning modes
- 3D Ground, Live, Pinpointer, Detector Fast, Detector Advanced, 3D Detector
- Depth
- 3D system up to 49 ft (15 m), PI up to 10 ft (3 m), maker figures
- 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 Dual? Ask us or call +1 (307) 370-3071.
Overview
The GR-4 Dual adds a pulse induction metal detector to the GR-4 3D ground scanner, so one kit covers both quick metal detecting and deeper 3D scanning.
Detector Fast Scan and Advanced Scan modes let you tell ferrous from non-ferrous and valuable from non-valuable metals, and the 3D Ground Scanning Detector mode sends detector results to the G-Portal app for 3D analysis. The PI system is rated to about 10 ft and the 3D system to 49 ft depending on target and soil.
Highlights
- 3D ground scanner and PI metal detector in one
- Six scanning functions
- Ferrous and non-ferrous discrimination
- G-Portal 3D/4D app for Android and iOS
- PI to about 10 ft, 3D to 49 ft (maker figures)
Specifications
| Type | 3D ground scanner and pulse induction detector |
|---|---|
| Detector | Pulse induction, 1 kHz |
| Scanning modes | 3D Ground, Live, Pinpointer, Detector Fast, Detector Advanced, 3D Detector |
| Depth | 3D system up to 49 ft (15 m), PI up to 10 ft (3 m), maker figures |
| Operating time | About 6 h PI, about 10 h 3D |
| 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 |
Depth and range figures are the manufacturer's stated maximums. Results vary with soil, target size and conditions.
Specifications from GroundTech, checked October 2026.
