1. Introducción
This manual provides detailed instructions for the installation, operation, and maintenance of your Zerone Bluetooth MP3 WMA Decoder Board. Please read this manual thoroughly before using the product to ensure proper function and longevity.
2. Producto terminadoview
The Zerone Bluetooth MP3 WMA Decoder Board is a versatile audio module designed to add modern connectivity to existing audio systems. It supports music playback from USB drives, TF cards, and Bluetooth-enabled devices. Additionally, it features an FM radio tuner and hands-free calling capabilities.
Características principales:
- Bluetooth hands-free call support.
- Compatible with APE, FLAC, WAV, WMA, and MP3 lossless audio formats.
- Supports USB disk, TF card, Bluetooth, and FM radio modes.
- Power-off memory function retains last settings.
- Blue backlight display for clear visibility.
- Incluye un control remoto para una operación conveniente.
- Multiple EQ sound modes and mute function.
Contenido del paquete:
- 1 x Bluetooth Decoder Board
- 1 x control remoto
- 1 x 2-pin Power Cable
- 2 x 3-pin Audio Output Cables

Figura 2.1: Frente view of the decoder board, highlighting the USB port, TF card slot, display, and control buttons.
3. Configuración
Careful wiring is essential for the correct operation of the decoder board. Ensure all connections are secure before applying power.
3.1 Conexión de alimentación
The decoder board can be powered via two methods:
- CC 7V-12V: Use the provided 2-pin power cable to connect to a DC power source within this voltage range. Observe polarity (red for positive, black for negative).
- 5V Micro USB: Alternatively, power the board using a 5V Micro USB cable connected to the Micro USB port.
The operating current required is 800mA-1A.
3.2 Conexión de salida de audio
Use the provided 3-pin cables to connect the audio output of the decoder board to your amplifier or active speakers. These cables typically provide left, right, and ground audio signals.
3.3 Conexión de antena FM
For optimal FM radio reception, connect an external antenna wire to the designated FM ANT hole located on the bottom back of the board. A simple wire can significantly improve signal strength.

Figura 3.1: Posterior view of the decoder board, illustrating the wiring points for power and audio output.

Figura 3.2: Arriba y abajo views of the decoder board, providing a comprehensive look at its internal structure and connection interfaces.
4. Instrucciones de funcionamiento
The decoder board offers multiple playback modes and functions, controllable via the front panel buttons or the included remote control.
4.1 Encendido y apagado
Connect the power supply. The board will automatically power on. To power off, use the power button on the remote control. If power is disconnected, the board will power on automatically when reconnected.
Selección de 4.2 modos
Presione el MODO button on the front panel or remote control to cycle through available modes: USB, TF, Bluetooth, and FM.

Figure 4.1: Illustration of the various input modes supported by the decoder board.
4.3 Reproducción de tarjeta USB/TF
Insert a USB flash drive into the USB port or a TF card into the TF card slot. The board will automatically switch to the respective mode and begin playing supported audio files (APE, FLAC, WAV, WMA, MP3).
4.4 Modo Bluetooth
- Switch the decoder board to Bluetooth mode using the MODO button. The display will indicate Bluetooth mode.
- On your mobile device, search for Bluetooth devices and select the one corresponding to the decoder board (e.g., "Bluetooth Speakers").
- Once paired, you can play audio from your device through the decoder board.
Modo de radio 4.5 FM
- Switch the decoder board to FM mode.
- Escaneo automático: Mantenga pulsado el REPRODUCIR/PAUSA button to initiate an automatic scan for FM stations. The board will scan and save available stations as presets. Ensure an FM antenna is connected for best results.
- Estaciones de cambio: Presione brevemente el REPRODUCIR/PAUSA button to cycle through saved presets. Use the VOL+ or vol- buttons (short press) to manually tune up or down frequencies.
4.6 Llamadas manos libres
When a call is received in Bluetooth mode, the music will pause. Press the REPRODUCIR/PAUSA button to answer the call. Press it again to end the call. The integrated microphone allows for hands-free communication.

Figure 4.2: The decoder board supports hands-free calls when connected via Bluetooth.
4.7 Control de volumen
Mantenga pulsado el VOL+ or vol- buttons on the front panel or remote control to adjust the volume level.
4.8 Funciones de control remoto
The remote control provides convenient access to all functions. Refer to the remote control diagram for button layout.

Figura 4.3: detallada view of the remote control, showing various function buttons.

Figure 4.4: The remote control allows for convenient operation from a distance.
5. Mantenimiento
To ensure the longevity and optimal performance of your decoder board, follow these simple maintenance guidelines:
- Limpieza: Use a soft, dry cloth to clean the surface of the board. Avoid using liquid cleaners or solvents, as they may damage the components.
- Ambiente: Operate the board in a dry environment, away from excessive heat, moisture, and direct sunlight.
- Conexiones: Revise periódicamente todas las conexiones del cableado para asegurarse de que estén seguras y libres de corrosión.
- Almacenamiento: Si va a almacenar el dispositivo durante un período prolongado, desconéctelo de la fuente de alimentación y guárdelo en un lugar fresco y seco.
6. Solución de problemas
If you encounter issues with your decoder board, refer to the following common problems and solutions:
| Problema | Posible causa / solución |
|---|---|
| No power / Board does not turn on. | Check power connections (7-12V DC or 5V Micro USB). Ensure correct polarity. Verify power source is active. |
| Sin salida de audio. | Ensure audio output cables are correctly connected to an amplifier or active speakers. Check volume levels on both the board and the connected audio system. Verify the correct mode is selected (USB, TF, Bluetooth, FM). |
| El dispositivo Bluetooth no se puede conectar. | Ensure the board is in Bluetooth mode. Make sure your device's Bluetooth is enabled and discoverable. Try restarting both the board and your Bluetooth device. |
| Poor FM radio reception / Cannot find stations. | Connect an external antenna wire to the FM ANT hole. Perform an automatic scan to save stations. Ensure you are in an area with good FM signal coverage. |
| Board does not remember last FM station. | After connecting an FM antenna, perform a full automatic scan and allow it to complete. The board will then remember the last station if it is one of the saved presets. Note that disconnecting power may reset to Bluetooth mode. |
| Display color is red, not blue as expected. | While product descriptions may indicate a blue backlight, some units may feature a red display. This is a cosmetic variation and does not affect functionality. |
| El control remoto no funciona. | Check the battery in the remote control. Ensure there are no obstructions between the remote and the board's IR receiver. |
| EQ button on remote has no effect. | Some EQ functions may be mode-specific or require specific audio sources. Verify if it works in different playback modes. |
7. Especificaciones
| Característica | Detalle |
|---|---|
| Número de modelo | 8541723136 |
| Marca | Zerone |
| Panel Size (L x H x D) | 107 mm x 25 mm x 38 mm |
| Espaciado de los orificios de montaje | 92 mm |
| Tamaño de pantalla | 45 mm x 8 mm |
| Vol de funcionamientotage | DC 7V-12V, 5V/Micro USB |
| Corriente de funcionamiento | 800mA-1A |
| Tecnologías de conectividad | Auxiliar, Bluetooth, USB |
| Características especiales | Bluetooth FM Transmitter, Hands-Free Calls |
| Formatos de audio compatibles | APE, FLAC, WAV, WMA, MP3 |
| Peso del artículo | 1.44 onzas (aprox. 40 g) |
8. Garantía y soporte
For product support, technical assistance, or inquiries regarding your Zerone Bluetooth MP3 WMA Decoder Board, please refer to the official Zerone brand store or contact your retailer. Specific warranty details may vary by region and retailer.
Visita el Tienda Zerone Para más información.