1. Product Overview
The GreenRex REX-8 Metal Detector is designed for professional and recreational use, offering high accuracy and versatility for detecting various metals. It features an IP68 waterproof search coil, multiple detection modes, and an oversized backlit LCD for enhanced user experience.
What's in the Box
- GreenRex REX-8 Metal Detector Unit
- Premium Headphones
- Foldable Shovel
- Carrying Bag
- User Manual
2. Setup and Assembly
Follow these steps to assemble your GreenRex REX-8 Metal Detector.
2.1 Component Identification
2.2 Assembly Steps
- Attach the Search Coil: Connect the search coil to the lower stem and secure it with the provided fasteners.
- Connect Stems: Insert the lower stem into the middle stem, and then the middle stem into the upper stem. Ensure all connections are firm.
- Mount the Control Box: Slide the control box onto the upper stem and secure it.
- Wrap the Cable: Carefully wrap the search coil cable around the stem, ensuring it is not too tight or loose, and plug it into the control box.
- Install Batteries: Open the battery compartment on the control box and insert the required 9V batteries (not included). Ensure correct polarity.
- Adjust Length: Adjust the telescoping rod to a comfortable length for your height. The detector is adjustable from 62 cm (24.4 inches) to 132 cm (51.9 inches).
3. Operating Instructions
This section details how to operate your GreenRex REX-8 Metal Detector effectively.
3.1 Control Panel Overview
- MODE Button: Cycles through the five detection modes.
- SENS Button (+/-): Adjusts the sensitivity level (5 levels available).
- VOL Button (+/-): Adjusts the speaker volume (3 levels available).
- Backlight Button: Activates or deactivates the LCD backlight for low-light conditions.
- PP (Pinpoint) Button: Activates Pinpoint mode for precise target location.
- Target ID Display: Shows the probable type of metal detected.
- Depth Indicator: Estimates the depth of the detected object.
3.2 Detection Modes
The GreenRex REX-8 offers five distinct detection modes to optimize your search for specific targets.
- All Metal Mode: Detects all types of metal without discrimination. This mode is ideal for general searching when you want to find any metallic object.
- Disc Mode: Allows you to discriminate against unwanted metals, such as iron or foil. The detector will ignore selected metal types, focusing only on desired targets.
- Memory Mode: Detects only the specific type of metal you have previously selected and stored in memory. This is useful for repeatedly searching for a particular metal.
- Jewelry Mode: Specifically tuned to focus on finding jewelry, eliminating common iron signals.
- Pinpoint (PP) Mode: Used to precisely locate the exact position of a detected target before digging. Press and hold the PP button to activate.
3.3 Sensitivity Adjustment
Adjusting sensitivity is crucial for optimal performance. Higher sensitivity increases detection depth but can also lead to more false signals in mineralized ground or areas with electromagnetic interference. Lower sensitivity reduces false signals but may decrease detection depth.
- Use the SENS +/- buttons to increase or decrease sensitivity.
- Start with a moderate sensitivity level and adjust as needed based on ground conditions.
3.4 Detection Depth and Waterproof Coil
The GreenRex REX-8 can detect objects up to 7-10 inches deep, depending on the size and type of metal. The 10-inch IP68 waterproof search coil allows for effective use in shallow water, such as beaches and riverbanks. Note: The control box is not waterproof and must be kept dry.
4. Maintenance
Proper maintenance ensures the longevity and optimal performance of your metal detector.
- Cleaning: After each use, especially in sandy or wet conditions, wipe down the search coil and stem with a damp cloth. Ensure the control box remains dry. Do not use abrasive cleaners.
- Storage: Store the detector in a cool, dry place. If storing for an extended period, remove the batteries to prevent leakage.
- Battery Care: Always use fresh, high-quality 9V batteries. Replace batteries when the low battery indicator appears on the LCD.
- Cable Inspection: Regularly check the search coil cable for any signs of wear or damage. Ensure connections are secure.
5. Troubleshooting
If you encounter issues with your GreenRex REX-8 Metal Detector, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No power or unit does not turn on | Dead or incorrectly installed batteries | Replace batteries with fresh 9V batteries, ensuring correct polarity. |
| Constant false signals or erratic behavior | High sensitivity, electromagnetic interference, or highly mineralized ground | Reduce sensitivity using the SENS - button. Move away from power lines, cell phones, or other electronic devices. Try a different detection mode. |
| Poor detection depth | Low sensitivity, small target, or deeply buried object | Increase sensitivity using the SENS + button. Ensure the search coil is parallel to the ground and swept slowly. |
| No audio response | Volume too low, headphones unplugged, or faulty speaker/headphones | Increase volume using the VOL + button. Ensure headphones are securely plugged in. Test with different headphones or rely on the built-in speaker. |
6. Specifications
- Brand: GreenRex
- Model Number: REX-8
- Color: Metal Detector Kit Black
- Material: Metal, Plastic
- Power Source: Battery Powered (9V batteries required)
- Item Weight: 6.12 pounds
- Product Dimensions: 11"L x 6"W x 24"H (collapsed)
- Extended Length: Up to 132 Centimeters (51.9 inches)
- Search Coil Size: 10 Inches
- International Protection Rating: IP68 (search coil only)
- Detection Modes: 5 (All Metal, Disc, Memory, Jewelry, Pinpoint)
- Sensitivity Levels: 5
- Volume Levels: 3
7. Warranty and Support
GreenRex is committed to providing quality products and excellent customer service. While specific warranty details are not provided in this manual, our professional support team is available to assist you with any questions or issues you may encounter with your REX-8 Metal Detector.
For support, please refer to the contact information provided with your purchase or visit the official GreenRex website.