1. Uvod
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. Izdelek je končanview
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.
Ključne značilnosti:
- Portable Pen Design: 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.
- Dvojni načini merjenja: 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.
- Uporabniku prijazne funkcije: 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. Nastavitev
3.1. Namestitev baterije
- 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.
- Varno namestite pokrov prostora za baterije.
3.2. Vklop/izklop
- Za vklop naprave pritisnite Gumb za vklop (
). The display will illuminate. - Naprava se samodejno izklopi po 5 minutah nedejavnosti, da ohrani življenjsko dobo baterije.
- Za ročni izklop pritisnite in držite Gumb za vklop.
4. Navodila za uporabo
4.1. Selecting Measurement Modes
The Mastfuyi FY8861 offers two moisture measurement modes and an ambient temperature measurement mode. Use the Gumb SEL to cycle through these modes.
- Mode A (Wood Moisture Measurement):
When the device is powered on, it typically defaults to Mode A. The indicator light will be rdeča. 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):
Pritisnite Gumb SEL once to switch to Mode B. The indicator light will be zelena. 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:
Pritisnite Gumb 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 Gumb SEL še enkrat.
Image 4.3: Device displaying ambient temperature, with options to switch between Celsius and Fahrenheit.
4.2. Izvajanje meritev
- Odstranite zaščitni pokrovček z merilnih zatičev.
- Select the appropriate measurement mode (Wood or Building Material) using the Gumb 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 prikazano na zaslonu.
- Po meritvi previdno izvlecite zatiče in namestite zaščitni pokrovček.
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.
- Med merjenjem pritisnite Gumb 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. Vzdrževanje
5.1. Čiščenje
- After each use, wipe the measurement pins with a clean, dry cloth to remove any residue.
- Clean the device body with a soft, damp krpo. Ne uporabljajte abrazivnih čistil ali topil.
- Pred shranjevanjem se prepričajte, da je naprava popolnoma suha.
5.2. Shranjevanje
- Always replace the protective cap over the measurement pins when not in use to prevent damage and injury.
- Napravo shranjujte na hladnem in suhem mestu, stran od neposredne sončne svetlobe in ekstremnih temperatur.
- Če napravo shranjujete dlje časa, odstranite baterije, da preprečite puščanje.
6. Odpravljanje težav
6.1. No Reading or "Lo" Display
- vzrok: If the material (e.g., wood board) is extremely dry, it acts as an insulator, preventing electrical conductivity between the two pins.
- rešitev: 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. Netočne meritve
- 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.
- Raven baterije: A low battery can affect accuracy. Replace batteries if the battery indicator is low.
- Okoljski dejavniki: Extreme humidity or temperature can sometimes influence readings. Allow the device to acclimate to the environment.
6.3. Naprava se ne vklopi
- Preverite baterije: Ensure batteries are correctly installed with proper polarity and are not depleted. Replace with fresh AAA batteries if necessary.
- Predal za baterije: Confirm the battery compartment cover is securely closed.
7. Specifikacije
| Funkcija | Specifikacija |
|---|---|
| Številka modela | FY8861 |
| Merilno območje (les) | 0 % do 40 % |
| Measurement Range (Building Materials) | 0 % do 40 % |
| Resolucija | 0.1 % |
| Natančnost | ±2 % |
| Razpon temperature okolja | 0~50°C / 14~122°F |
| Vir napajanja | 2 x AAA 1.5V Batteries (not included, but often supplied) |
| Samodejni izklop | Po 5 minutah nedejavnosti |
| Teža predmeta | 3.2 unče (približno 90 g) |
| Dimenzije paketa | 7.09 x 1.61 x 1.38 palcev |
| Proizvajalec | Mastfuyi |
8. Garancija in podpora
8.1. Informacije o garanciji
Mastfuyi provides a 48-month unconditional warranty for the FY8861 Wood Moisture Meter. This warranty covers manufacturing defects and ensures product reliability.
8.2. After-Sales Service and Support
We are committed to providing excellent customer service. Mastfuyi offers doživljenjska poprodajna storitev 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.





