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**Product Specifications for MD-91 Ground Search Metal Detector**
- **Model No.:** MD-91
- **Easy Operation:** User-friendly English Panel
- **Warranty:** Two-Year Parts and Labor Warranty, Lifetime Service
- **Waterproof Search Coil:** 15" Waterproof Coil for Enhanced Durability
- **Ground Balance:** Full-Control Ground Balance for Accurate Detection
- **Charging Indicator Lights:** Rechargeable with LED Battery Life Indicator
- **Color:** Blue
- **Trademark:** Vfinder
- **Transport Package:** Standard Carton Packaging
- **Specification:** Full-Control Ground Balance, Advanced Discrimination System
- **Origin:** Guangdong, Dongguan
The MD-91 is a high-performance metal detector designed to meet the needs of professional users who require deep detection capabilities. Developed with advanced technology, it features a high-power transmitter and an automatic tracking system, making it ideal for deep strata exploration. This device is particularly effective in challenging environments where traditional detectors struggle.
Key Features:
1. **Rechargeable with LED Indicators:** The MD-91 comes with a rechargeable battery and LED lights that indicate battery life and charging status.
2. **Full-Control Ground Balance:** Ensures accurate detection by compensating for natural mineralization in the ground.
3. **Ferrous and Non-Ferrous Discrimination:** Unlike most metal detectors on the market, the MD-91 can distinguish between different types of metals.
4. **Deep Penetration & Sensitivity:** Offers remarkable depth and sensitivity even in the most difficult soil conditions.
5. **Waterproof 15" Search Coil:** Designed for use in wet or muddy environments without compromising performance.
6. **Threshold Control:** Adjusts audio output to detect smaller and deeper signals more clearly.
7. **Frequency Control:** Reduces interference from power lines, microwaves, and other environmental sources.
8. **User-Friendly Interface:** Equipped with an English panel for easy operation.
9. **Comprehensive Warranty:** Includes a two-year parts and labor warranty, along with lifetime service support.
Metal detectors often face challenges due to mineralization, where naturally occurring minerals in the soil can interfere with signal detection. This phenomenon, known as "mineralization reaction," causes false alarms and limits the ability of traditional detectors to find deeply buried objects. The MD-91 overcomes this issue with its advanced balance system, which filters out unwanted signals and focuses on actual metal targets, significantly improving detection depth and accuracy.
The MD-91 also features a versatile design that allows users to switch between small and large search coils depending on the environment. In complex or indoor settings, the small coil provides stable and accurate detection. For deep searches in uniform soil conditions, the larger coil enhances penetration but may be more susceptible to interference.
Whether you're searching for gold, relics, or lost items, the MD-91 offers the power, precision, and flexibility needed to tackle any challenge. With its durable construction, intuitive controls, and reliable performance, it's a top choice for both hobbyists and professionals.