1. Introduction
The DURFICST WM710A Moisture Meter is a professional-grade, non-destructive device designed for accurately measuring moisture content in various building materials. Utilizing high-frequency waves, it provides precise readings without damaging the surface of the material. Its large HD color screen and intuitive interface make it an essential tool for homeowners, contractors, and anyone needing to detect moisture in wood, walls, plaster, masonry, and more.

Image: The DURFICST WM710A Moisture Meter shown with its included cloth bag, screwdriver, and AAA batteries.
2. What's in the Box
Upon opening your DURFICST Moisture Meter package, you should find the following items:
- DURFICST WM710A Moisture Meter
- Cloth Bag
- 3 x AAA Batteries
- Screwdriver
- User Manual (this document)
3. Key Features
- 100% Non-destructive Measurement: Measures moisture without inserting probes, preserving surface integrity. The ball probe allows for easy measurement in tight areas and uneven surfaces.
- Depth Analysis: High-frequency waves penetrate approximately 20-40mm into masonry.
- Automatic Calibration: Quick 3-second calibration ensures high-precision measurements.
- High-precision Measurement: Adopts a high-precision alloy probe and high-performance processing chip for accurate and responsive readings. Measurement range: 0.0-100.0 with 0.1% resolution.
- 3-inch HD Color Screen: Features a clear display with three color analog bars (Green, Yellow, Red) indicating "DRY", "RISK", and "WET" status for intuitive reading.
- Wide Range of Uses: Suitable for wood, wallboard, slate, tiles, cardboard, plaster, concrete, and mortar. Ideal for detecting water leaks and checking moisture in various household structures.
- Comfortable & Easy to Carry: Ergonomic design with non-slip pads and includes a convenient cloth bag for portability.
- Data Hold Function: Allows you to freeze the current measurement on the screen.
- Max/Min Measurement: Records the maximum and minimum readings during a measurement session.
- Auto-Off Function: Automatically powers off after 30 minutes of inactivity to conserve battery life.

Image: Overview of the DURFICST moisture meter's key features, including non-destructive measurement, HD color screen, and auto-off.
4. Setup
4.1 Battery Installation
- Locate the battery compartment on the back of the meter.
- Use the included screwdriver to open the battery cover.
- Insert three (3) AAA batteries, ensuring correct polarity (+/-).
- Replace the battery cover and secure it with the screw.

Image: Front and back view of the DURFICST moisture meter, showing the battery compartment location.
4.2 Initial Power On and Calibration
The DURFICST WM710A features automatic calibration for ease of use.
- Press the Power Button (
) to turn on the device. - Hold the meter in the air, away from any objects or surfaces.
- Press the MEAS button. The screen will display "CAL" and complete automatic calibration within 3 seconds.
- Once calibration is complete, the display will show "0.0", indicating it is ready for measurement.

Image: Step-by-step guide for powering on and calibrating the moisture meter.
5. Operating Instructions
5.1 Taking a Measurement
- Ensure the meter is calibrated (as per Section 4.2).
- Place the spherical sensor firmly against the surface of the material you wish to measure. The sensor can penetrate 20-40mm into masonry.
- Read the moisture content directly from the 3-inch HD color screen.
- Important Note: When measuring, try to hold the lower part of the meter to avoid wet hands affecting the measurement results. Metals cannot be measured.

Image: A user demonstrating how to measure moisture content on a wall using the DURFICST meter.
5.2 Interpreting the Display
The 3-inch HD color screen provides clear visual indicators:
- The main numerical display shows the current moisture reading (0.0-100.0).
- A three-color analog bar indicates the moisture status:
- Green: Indicates "DRY" conditions.
- Yellow: Indicates "RISK" of moisture.
- Red: Indicates "WET" conditions.
- The display also shows MAX/MIN readings and a data hold symbol when activated.

Image: Detailed view of the moisture meter's screen, highlighting the digital reading, analog bar, and status indicators.
5.3 Adjustable Alarm Value
The meter allows you to set an adjustable alarm threshold. When the measured moisture content exceeds this set value, the meter will alert you, typically with an audible alarm or visual indicator.

Image: Illustration of the adjustable alarm value feature, indicating how the meter alerts to high moisture levels.
5.4 Applicable Materials
This moisture meter is suitable for a wide range of building materials, including but not limited to:
- Wood
- Wallboard
- Slate
- Tiles
- Cardboard
- Plaster
- Concrete
- Mortar
It is ideal for repairing water leaks, checking moisture in bedroom walls, floor tiles, caravans, and other similar applications.

Image: Examples of the moisture meter being used on different materials such as brick walls, ceilings, firewood, and wooden floors.

Image: The moisture meter in action on different surfaces, demonstrating its versatility.
6. Maintenance
6.1 Cleaning
To ensure accurate readings and prolong the life of your meter:
- Wipe the device with a soft, dry cloth after each use.
- Do not use abrasive cleaners or solvents.
- Keep the spherical sensor clean and free of debris.
6.2 Battery Replacement
When the low battery indicator appears on the screen, replace the batteries promptly to maintain optimal performance. Refer to Section 4.1 for battery installation instructions.
6.3 Storage
Store the moisture meter in its included cloth bag in a cool, dry place, away from direct sunlight and extreme temperatures. Remove batteries if storing for extended periods to prevent leakage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Meter does not power on. | Dead or incorrectly installed batteries. | Check battery polarity. Replace batteries if necessary (refer to Section 4.1). |
| Inaccurate or inconsistent readings. |
|
|
| Display is dim or flickering. | Low battery power. | Replace batteries. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | WM710A |
| Brand | DURFICST |
| Measurement Principle | Non-destructive, High-frequency wave |
| Measurement Depth | 20-40mm (approx.) |
| Measurement Range | 0.0-100.0 (relative scale) |
| Resolution | 0.1% |
| Display | 3-inch HD Color Screen |
| Power Source | 3 x AAA Alkaline Batteries (included) |
| Auto-Off | Yes (after 30 minutes of inactivity) |
| Product Dimensions | 2.36 x 1.18 x 9.06 inches |
| Item Weight | 7.41 ounces (210 Grams) |
| Country of Origin | China |
| Mounting Type | Surface Mount, Wall Mount |
9. Safety Information
Please read and understand all safety instructions before using the DURFICST Moisture Meter:
- Do not attempt to measure live electrical circuits or materials.
- This device is not waterproof. Avoid exposure to water or excessive humidity.
- Do not drop or subject the meter to severe impact.
- Keep out of reach of children.
- Dispose of batteries according to local regulations.
- Do not disassemble or modify the device. Unauthorized modifications may void the warranty and pose safety risks.
10. Product Video
Watch the official product video for a visual guide on using your DURFICST Moisture Meter:
Video: DURFICST 3" Colour HD Large Screen Moisture Meter - Demonstrates setup, calibration, and usage.
11. Warranty and Support
DURFICST is committed to providing high-quality products. For any questions, technical support, or warranty inquiries regarding your DURFICST WM710A Moisture Meter, please contact DURFICST customer support through the official website or your point of purchase.
For more information, visit the DURFICST Store on Amazon.