TIANXUN MD-4020 Underground Metal Detector Details
| Specification | Detail |
|---|---|
| Brand | TIANXUN / China Detectors |
| Model | MD-4020 Ground / Gold Detector |
| Type | VLF Underground / Ground-Search Detector |
| Power Supply | 2 × 9V batteries (6F22) |
| Tuning | Automatic tuning & ground balancing |
| Discrimination | Trash eliminator / discrimination mode |
| Indication Mode | Sound + Mechanical meter |
| Search Coil Diameter | ~8 inches |
| Stem Length / Stretch | Stretch length over ~30 inches |
| Depth / Sensitivity | Detects common metal targets (user-friendly “starter” / hobby level) |
| Applications | Gold, relics, coins, treasure hunting |
| Weight / Color | Black color, moderately lightweight |
The TIANXUN MD-4020 Gold Metal Detector is a beginner-friendly ground-search device made by Shanghai Tianxun (China Detectors) that’s suitable for treasure hunting, gold prospecting, and relic exploration. It comes with automatic tuning and ground balancing, which simplifies setup and optimizes detection even in mineralized soils. Its discrimination (trash-eliminator) feature helps skip unwanted junk metals so you can focus on more valuable finds like gold or silver. The detector uses both sound alarms and a mechanical meter pointer, giving you intuitive feedback whether you’re a beginner or an experienced user.
Powered by two 9V batteries (6F22), the MD-4020 offers solid battery life for long detecting sessions. The search coil is about 8 inches, providing a balance between sensitivity and maneuverability. With a stretchy stem (over 30″), it’s comfortable to use for users of different heights. This detector is primarily made for gold-seeking beginners, hobbyists, and those doing basic ground treasure hunting. If you’re looking to buy in Bangladesh, check reliable Metal Detector Shop sources for authentic TIANXUN MD-4020 units and trusted after-sales support.
What is the price of TIANXUN MD-4020 Underground Metal Detector in Bangladesh?
The TIANXUN MD-4020 is a popular entry-level ground-search detector ideal for gold and relics. While local availability may vary, trusted online importers or specialty metal detector retailers often list it. To get the most accurate and current price, contact reputable metal detector shops in Bangladesh for stock, shipping, and warranty details.
Frequently Asked Questions (FAQs)
-
Can the MD-4020 detect gold?
Yes. It’s designed for ground-searching and can pick up small gold objects and relics. -
Does it have discrimination to ignore junk metal?
Yes — it includes a “Trash Eliminator” mode to filter out unwanted metals. -
How does the detector signal a find?
It signals using sound alerts and a mechanical meter pointer. -
What kind of power does it use?
It runs on two 9V (6F22) batteries. -
Is the search coil waterproof?
The specification sheet does not clearly state full waterproofing, but the 8″ coil is rugged for general ground detecting.








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