1. Introducere
This manual provides comprehensive instructions for the safe and effective use of your Mastfuyi FY8861 Wood Moisture Meter. This portable, pen-style device is designed for quick and accurate measurement of moisture content in wood and various building materials, and also includes ambient temperature measurement. Please read this manual thoroughly before operation and retain it for future reference.
2. Produs terminatview
The Mastfuyi FY8861 is a compact and lightweight moisture meter, ideal for professionals and DIY enthusiasts. Its ergonomic design ensures comfortable handling and portability.

Image 2.1: Mastfuyi FY8861 Wood Moisture Meter with protective cap and included AAA batteries.
Caracteristici cheie:
- Design stilou portabil: Weighs approximately 1.83 ounces (52g) without batteries, making it easy to carry.
- High-Precision Pins: Equipped with two durable 303 stainless steel pins for accurate readings.
- Moduri de măsurare duale: Dedicated modes for wood and building materials.
- Ambient Temperature Measurement: Measures temperature in Celsius or Fahrenheit.
- MAX/MIN Value Freeze Function: Records peak moisture data during measurement.
- Caracteristici ușor de utilizat: Automatic power-off after 5 minutes of inactivity and a battery indicator.

Image 2.2: The compact and portable pen-style design of the Mastfuyi FY8861, highlighting its dimensions and light weight.
3. Configurare
3.1. Instalarea bateriei
- Locate the battery compartment cover, typically on the back or side of the device.
- Carefully remove the cover. Some models may require unscrewing a small screw or sliding a latch.
- Insert two AAA 1.5V batteries, ensuring correct polarity (+/-) as indicated inside the compartment. Note: Some users report difficulty inserting batteries due to spring tension; gentle but firm pressure may be required.
- Puneți bine capacul compartimentului bateriei.
3.2. Pornire/Oprire
- Pentru a porni dispozitivul, apăsați tasta Buton de pornire (
). The display will illuminate. - Dispozitivul se va opri automat după 5 minute de inactivitate pentru a conserva durata de viață a bateriei.
- Pentru a opri manual alimentarea, apăsați și mențineți apăsat butonul Buton de pornire.
4. Instrucțiuni de utilizare
4.1. Selecting Measurement Modes
The Mastfuyi FY8861 offers two moisture measurement modes and an ambient temperature measurement mode. Use the Butonul SEL pentru a parcurge aceste moduri.
- Mode A (Wood Moisture Measurement):
When the device is powered on, it typically defaults to Mode A. The indicator light will be roşu. This mode is suitable for measuring moisture in various types of wood, from hardwood to softwood. The measurement range is 0% to 40%.
Image 4.1: Device display showing Mode A for wood moisture measurement with a red indicator light.
- Mode B (Building Material Moisture Measurement):
Apăsați tasta Butonul SEL once to switch to Mode B. The indicator light will be verde. This mode is designed for measuring moisture in building materials such as concrete and drywall. The measurement range is 0% to 40%.
Image 4.2: Device display showing Mode B for building material moisture measurement with a green indicator light.
- Ambient Temperature Measurement:
Apăsați tasta Butonul SEL again to switch to ambient temperature measurement. In this mode, the indicator light will be off. You can toggle between Celsius (°C) and Fahrenheit (°F) by pressing the Butonul SEL încă o dată.
Image 4.3: Device displaying ambient temperature, with options to switch between Celsius and Fahrenheit.
4.2. Preluarea măsurătorilor
- Scoateți capacul de protecție de pe știfturile de măsurare.
- Select the appropriate measurement mode (Wood or Building Material) using the Butonul SEL.
- Firmly insert the two measurement pins into the material you wish to test. For best results, push the pins deep enough to ensure good contact with the material.
- Read the moisture content percentage afișat pe ecran.
- After measurement, carefully withdraw the pins and replace the protective cap.
4.3. MAX/MIN Value Freeze Function
The MAX/MIN function is useful for recording the highest or lowest moisture reading during a measurement session, especially when testing materials with varying moisture levels at different depths.
- În timpul unei măsurători, apăsați tasta Butonul MAX / MIN to toggle between displaying the maximum, minimum, or current reading.
- This allows you to capture peak data without continuously monitoring the display.

Image 4.4: Device display illustrating the MAX/MIN hold function, showing recorded maximum and minimum moisture values.
5. Întreținere
5.1. Curatenie
- After each use, wipe the measurement pins with a clean, dry cloth to remove any residue.
- Clean the device body with a soft, damp pânză. Nu utilizați agenți de curățare abrazivi sau solvenți.
- Asigurați-vă că dispozitivul este complet uscat înainte de depozitare.
5.2. Depozitare
- Always replace the protective cap over the measurement pins when not in use to prevent damage and injury.
- Depozitați dispozitivul într-un loc răcoros și uscat, ferit de lumina directă a soarelui și de temperaturi extreme.
- Dacă depozitați pentru o perioadă lungă de timp, scoateți bateriile pentru a preveni scurgerile.
6. Depanare
6.1. No Reading or "Lo" Display
- Cauza: If the material (e.g., wood board) is extremely dry, it acts as an insulator, preventing electrical conductivity between the two pins.
- Soluţie: Ensure the material is not excessively dry. For accurate readings, the pins must make good electrical contact. Push the pins deep into the material. If the material is genuinely very dry, a "Lo" reading or no reading is expected and indicates low moisture.
6.2. Citiri inexacte
- Check Pin Contact: Ensure both pins are fully inserted and making firm contact with the material.
- Select Correct Mode: Verify that you are using the correct mode (Wood or Building Material) for the material being tested.
- Nivel baterie: A low battery can affect accuracy. Replace batteries if the battery indicator is low.
- Factori de mediu: Extreme humidity or temperature can sometimes influence readings. Allow the device to acclimate to the environment.
6.3. Dispozitivul nu pornește
- Verificați bateriile: Ensure batteries are correctly installed with proper polarity and are not depleted. Replace with fresh AAA batteries if necessary.
- Compartiment baterie: Confirm the battery compartment cover is securely closed.
7. Specificații
| Caracteristică | Caietul de sarcini |
|---|---|
| Numărul de model | FY8861 |
| Measurement Range (Wood) | 0% până la 40% |
| Measurement Range (Building Materials) | 0% până la 40% |
| Rezoluţie | 0.1% |
| Precizie | ±2% |
| Interval de temperatură ambientală | 0~50°C / 14~122°F |
| Sursa de alimentare | 2 x AAA 1.5V Batteries (not included, but often supplied) |
| Oprire automată | După 5 de minute de inactivitate |
| Greutatea articolului | 3.2 uncii (aprox. 90 g) |
| Dimensiuni pachet | 7.09 x 1.61 x 1.38 inci |
| Producător | Mastfuyi |
8. Garanție și asistență
8.1. Informații despre garanție
Mastfuyi oferă o Garanție necondiționată de 48 de luni for the FY8861 Wood Moisture Meter. This warranty covers manufacturing defects and ensures product reliability.
8.2. Servicii și asistență post-vânzare
We are committed to providing excellent customer service. Mastfuyi offers serviciul post-vânzare pe viață for this product. If you have any questions, encounter issues, or require assistance, our 24/7 online after-sales service team is available to help you as soon as possible.
For further support or to explore other Mastfuyi products, please visit the official Mastfuyi Store.





