GRM5 Metal Detector 20m Depth – Gold & Silver Scanner
GRM5 Metal Detector 20m Depth – Gold & Silver Scanner
GRM5 Deep-Scan Metal Detector – Find Gold, Silver & More Up to 20m Below Ground
The GRM5 Metal Detector is a high-performance scanning device engineered for serious treasure hunters, prospectors, and field surveyors. With a detection depth of approximately 20 metres (21.9 yd) and a search scope reaching up to 1,200 metres (1,312 yd), this advanced unit gives you unmatched range and accuracy when searching for buried gold, silver, copper, and gemstones.
Powered by a microcomputer CPU-controlled reflection conductivity system and operating on a 400–470 MHz signal frequency, the GRM5 delivers precise, stable readings even in challenging outdoor environments. The built-in LCD display and multi-mode indicator lights keep you informed at every step, while the frequency adjuster lets you zero in on specific metal types with confidence.
Made in Mainland China.
Key Features
- Accurate Metal Identification: The adjustable frequency system allows you to distinguish between copper, gold, silver, and gemstones — pinpointing buried targets with confidence.
- Exceptional Sensitivity & Stability: Engineered for precise, consistent performance in open fields, jungles, and low-interference environments.
- Intelligent Modular Operation: Advanced CPU-controlled chip unit with self-calibration and self-test functionality for quick, reliable scanning sessions.
- Remote Search System: Dual-unit design with a host detector and handheld sensor that swings to indicate buried objects — the larger the target, the wider the swing.
- LCD Display Screen: Clear 95 × 55 mm display provides real-time status and depth readouts.
- Rechargeable Battery: Built-in AAA 1000 mAh hydrogen rechargeable battery; fully charges in 8–10 hours via included power plug — no disposables needed.
- Durable Aluminium Construction: Lightweight yet rugged aluminium body measuring 292 × 103 mm for comfortable field use.
Specifications
| Model | GRM5 |
| Material | Aluminium |
| Signal Frequency | 400–470 MHz |
| Detection Depth | Approx. 20 m / 21.9 yd |
| Search Scope | Approx. 1,200 m / 1,312.3 yd |
| Unit Size | 292 × 103 mm / 11.5 × 4.1 in |
| Display Size | 95 × 55 mm / 3.74 × 2.17 in |
| Battery | Built-in AAA 1000 mAh rechargeable (included) |
| Detection Types | Copper, Gold, Silver, Gemstones |
| Search System | Microcomputer CPU control & reflection conductivity |
| Power Type | Rechargeable (8–10 hr charge time) |
| Country of Origin | Mainland China |
How to Use
- Fully charge the device (8–10 hours) via the included power plug before first use.
- Turn on both the host detector and the sensor unit simultaneously.
- Pull out the antenna and activate the sensor switch.
- Select the target metal type (gold, silver, copper, gemstone) using the host's gear selector — the corresponding indicator light on the sensor will illuminate.
- Adjust the depth and range settings on the host unit to begin scanning.
- When a target is detected, the handheld sensor will sway; a wider swing indicates a larger object.
- For best results, operate in open or jungle environments with minimal electromagnetic interference.
What's in the Box
- 1 × GRM5 Metal Detector with LCD Display Screen
- 1 × Power Plug / Charger
- 1 × Instruction Manual
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Frequently Asked Questions
Q: How deep can the GRM5 Metal Detector detect buried objects?
A: The GRM5 is rated for a detection depth of approximately 20 metres (21.9 yards), making it one of the deepest-reaching handheld metal scanning devices available for treasure hunting and prospecting.
Q: What types of metals and materials can the GRM5 detect?
A: The GRM5 can identify copper, gold, silver, and gemstones. Using the frequency adjuster and gear selector, you can programme the device to target a specific material type, with a dedicated indicator light confirming your selection.
Q: Does the GRM5 Metal Detector come with a battery, and how long does it take to charge?
A: Yes — a built-in AAA 1000 mAh rechargeable hydrogen battery is included. Simply connect the included power plug to charge. A full charge takes approximately 8–10 hours and the device is ready to use straight out of the box once charged.
Q: Do both the host unit and the sensor need to be turned on at the same time?
A: Yes. For the GRM5 to function correctly, both the host detector and the handheld sensor must be switched on and off together. If a gear is selected on the host but the sensor indicator light does not illuminate, check that both units are sufficiently charged.
Q: What environment is best suited for using the GRM5?
A: The GRM5 performs best in low-interference environments such as open fields or jungle terrain, away from power lines, electronic equipment, and other sources of electromagnetic interference. Stable handling of the sensor unit is important for accurate readings.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.