1. Wprowadzenie
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. Koniec produktuview
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.
Główne cechy:
- 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.
- Podwójne tryby pomiaru: Dedicated modes for wood and building materials.
- Ambient Temperature Measurement: Mierzy temperaturę w stopniach Celsjusza lub Fahrenheita.
- MAX/MIN Value Freeze Function: Records peak moisture data during measurement.
- Funkcje przyjazne dla użytkownika: 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. Konfiguracja
3.1. Instalacja baterii
- 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.
- Dokładnie załóż pokrywę komory baterii.
3.2. Włączanie/wyłączanie zasilania
- Aby włączyć urządzenie, naciśnij Przycisk zasilania (
). Wyświetlacz zostanie podświetlony. - Urządzenie wyłączy się automatycznie po 5 minutach bezczynności, aby oszczędzać baterię.
- Aby ręcznie wyłączyć zasilanie, naciśnij i przytrzymaj Przycisk zasilania.
4. Instrukcja obsługi
4.1. Wybór trybów pomiaru
The Mastfuyi FY8861 offers two moisture measurement modes and an ambient temperature measurement mode. Use the Przycisk SEL aby przełączać się między tymi trybami.
- Mode A (Wood Moisture Measurement):
When the device is powered on, it typically defaults to Mode A. The indicator light will be czerwony. 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):
Naciśnij Przycisk SEL once to switch to Mode B. The indicator light will be zielony. 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:
Naciśnij Przycisk 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 Przycisk SEL jeszcze raz.
Image 4.3: Device displaying ambient temperature, with options to switch between Celsius and Fahrenheit.
4.2. Wykonywanie pomiarów
- Zdjąć nasadkę ochronną z kołków pomiarowych.
- Select the appropriate measurement mode (Wood or Building Material) using the Przycisk 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.
- Odczytaj zawartość wilgoci w procentachtage wyświetlane na ekranie.
- 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.
- Podczas pomiaru naciśnij Przycisk 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. Konserwacja
5.1. Czyszczenie
- After each use, wipe the measurement pins with a clean, dry cloth to remove any residue.
- Clean the device body with a soft, damp ściereczka. Nie należy używać środków czyszczących o właściwościach ściernych ani rozpuszczalników.
- Przed przechowywaniem należy upewnić się, że urządzenie jest całkowicie suche.
5.2. Przechowywanie
- Always replace the protective cap over the measurement pins when not in use to prevent damage and injury.
- Przechowuj urządzenie w chłodnym i suchym miejscu, z dala od bezpośredniego światła słonecznego i ekstremalnych temperatur.
- Jeśli urządzenie będzie przechowywane przez dłuższy czas, należy wyjąć baterie, aby zapobiec wyciekowi.
6. Rozwiązywanie Problemów
6.1. No Reading or "Lo" Display
- Przyczyna: If the material (e.g., wood board) is extremely dry, it acts as an insulator, preventing electrical conductivity between the two pins.
- Rozwiązanie: 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. Niedokładne odczyty
- 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.
- Poziom naładowania baterii: A low battery can affect accuracy. Replace batteries if the battery indicator is low.
- Czynniki środowiskowe: Extreme humidity or temperature can sometimes influence readings. Allow the device to acclimate to the environment.
6.3. Urządzenie się nie włącza
- Sprawdź baterie: Ensure batteries are correctly installed with proper polarity and are not depleted. Replace with fresh AAA batteries if necessary.
- Komora baterii: Sprawdź, czy pokrywa komory baterii jest szczelnie zamknięta.
7. Specyfikacje
| Funkcja | Specyfikacja |
|---|---|
| Numer modelu | Rok fiskalny 8861 |
| Measurement Range (Wood) | od 0% do 40% |
| Measurement Range (Building Materials) | od 0% do 40% |
| Rezolucja | 0.1% |
| Dokładność | ±2% |
| Zakres temperatur otoczenia | 0~50°C / 14~122°F |
| Źródło zasilania | 2 x AAA 1.5V Batteries (not included, but often supplied) |
| Automatyczne wyłączanie zasilania | Po 5 minutach bezczynności |
| Waga przedmiotu | 3.2 uncji (około 90 g) |
| Wymiary opakowania | 7.09 x 1.61 x 1.38 cala |
| Producent | Mastfuyi |
8. Gwarancja i wsparcie
8.1. Informacje o gwarancji
Mastfuyi zapewnia 48-miesięczna gwarancja bezwarunkowa 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 dożywotni serwis posprzedażowy 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 Sklep Mastfuyi.





