1. Introducción
Thank you for choosing the SONRU Bluetooth AUX Adapter. This device is designed to upgrade your non-Bluetooth audio systems, such as car stereos, home stereo systems, and wired headphones, with Bluetooth 5.3 connectivity. It also features an integrated FM transmitter with dual fast-charging USB ports, providing a comprehensive solution for wireless audio streaming, hands-free calling, and device charging on the go.

Image: The SONRU Bluetooth AUX Adapter (square unit) and the FM Transmitter (car charger unit) with included cables.
2. Contenido del paquete
Por favor, revise el contenido del paquete al abrirlo para asegurarse de que todos los elementos estén presentes:
- 1 x SONRU Wireless Bluetooth Receiver (Square Unit)
- 1 x SONRU Bluetooth FM Transmitter (Car Charger Unit)
- 1 x RCA Audio Cable (50cm)
- 2 cable de audio de 3.5 mm
- 1 x cable de carga USB
- 1 x Manual de usuario

Image: A visual representation of the package contents, including the Bluetooth receiver, FM transmitter, RCA cable, 3.5mm audio cables, USB charging cable, and user manual.
3. Características del producto
- Tecnología Bluetooth 5.3: Provides a faster, more stable, and smarter connection with compatible devices, optimizing transmission delay and connection stability for high-fidelity music.
- Cancelación de ruido: Built-in AEC echo cancellation and ANC noise cancellation circuits ensure purer and clearer sound quality.
- Puertos de carga rápida duales: The FM transmitter is equipped with PD 30W and QC3.0 18W ports, allowing simultaneous high-speed charging of two devices.
- Transmisión inalámbrica de audio: Updates non-Bluetooth speakers, headphones, home stereo systems, and car radio speakers with Bluetooth functionality.
- Llamadas manos libres: Features built-in microphone holes for clear call quality, supporting hands-free calls, navigation prompts, and music streaming.
- Multiple Playing Modes: Supports audio playback via Bluetooth and TF Card (up to 32GB) on the FM transmitter.
- Luz LED colorida: The FM transmitter features a customizable 7-color breathing light mode and static color options.
- Amplia compatibilidad: The Bluetooth receiver is compatible with various devices including phones, tablets, laptops, and MP3 players, and connects to home audio, car audio, and wired headphones via AUX or RCA ports.
- Protecciones de seguridad: Provides multiple protections against over-heat, over-current, over-voltage, and short-circuit during device charging.

Image: Demonstrates the hands-free calling, navigation, and music playback capabilities while driving.

Imagen: Primer plano view of the FM transmitter showing the dual USB ports (PD 30W and QC3.0 18W) for fast charging.

Image: Illustrates the wide compatibility of the Bluetooth receiver with various devices and audio systems.
4. Guía de configuración
4.1. Bluetooth AUX Adapter Setup (Square Unit)
- Cargue el receptor: Before first use, fully charge the Bluetooth receiver using the provided USB charging cable. The indicator light will change when fully charged.
- Conectar al sistema de audio:
- For devices with a 3.5mm AUX input (e.g., car stereo, wired headphones): Use one of the provided 3.5mm audio cables to connect the receiver's AUX output to your audio system's AUX input.
- For devices with RCA inputs (e.g., home stereo): Use the provided RCA audio cable to connect the receiver's RCA outputs to your home stereo's RCA inputs.
- Encendido: Press and hold the power button on the Bluetooth receiver until the indicator light turns on. It will automatically enter pairing mode.
- Emparejar con su dispositivo:
- Enable Bluetooth on your smartphone, tablet, or other audio source.
- Buscar "SONRU B0DBV7T5WN" (or similar name) in the list of available Bluetooth devices.
- Select it to pair. Once paired, the indicator light on the receiver will stop flashing and remain solid.
- Ajustar el volumen: Ensure the volume on both your audio source and the connected audio system is at an appropriate level.

Image: Shows the Bluetooth receiver connected to a car's AUX port, demonstrating how to upgrade non-Bluetooth car hardware.

Image: Highlights the stable wireless connection and battery life of the Bluetooth receiver, including 15 hours audio/calling, 7 days standby, and 2.5 hours charging time.
4.2. FM Transmitter Setup (Car Charger Unit)
- Conectar: Insert the FM transmitter into your vehicle's cigarette lighter socket. The LED display will light up.
- Sintonizar frecuencia FM:
- Find an empty FM frequency on your car radio (one with no strong signal).
- Press the FM button on the transmitter, then use the navigation buttons (or rotate the knob if available) to adjust the transmitter's frequency to match your car radio's frequency.
- Consejo: Choose a frequency that is completely static-free for the best audio quality.
- Emparejar con su dispositivo:
- Habilite Bluetooth en su teléfono inteligente o tableta.
- Buscar "SONRU B0DBV7T5WN" (or similar name) in the list of available Bluetooth devices.
- Select it to pair. Once paired, you will hear a confirmation tone.
5. Instrucciones de funcionamiento
5.1. Reproducción de música
- Modo Bluetooth: Once paired, open your music player app on your device. Audio will be streamed wirelessly to the connected AUX adapter or FM transmitter. Use your device or the adapter/transmitter controls (if available) to play/pause, skip tracks, and adjust volume.
- TF Card Mode (FM Transmitter Only): Insert a TF card (up to 32GB, formatted to FAT32) containing MP3/WMA/WAV/FLAC audio files into the TF card slot on the FM transmitter. The transmitter will automatically switch to TF card playback.

Image: Illustrates the two available playing modes for the FM transmitter: Bluetooth and TF Card (up to 32GB).
5.2. Hands-Free Calling (FM Transmitter)
- Responder/Finalizar llamada: Press the multi-function button (usually the play/pause button) once to answer an incoming call or end an ongoing call.
- Rechazar llamada: Mantenga presionado el botón multifunción durante 2 segundos para rechazar una llamada entrante.
- Volver a marcar el último número: Presione dos veces el botón multifunción para volver a marcar el último número marcado.
- Cambiar origen de llamada: During a call, press and hold the multi-function button to switch the call between the transmitter and your phone.
5.3. Charging Devices (FM Transmitter)
- Connect your device's charging cable to either the PD 30W port or the QC3.0 18W port on the FM transmitter.
- Ensure your device supports fast charging protocols for optimal charging speed.
5.4. LED Light Control (FM Transmitter)
- Prensa breve: Briefly press the light button to switch between different static colors.
- Pulsación larga: Press and hold the light button for 2 seconds to activate the 7-color breathing mode.

Image: Shows the various colorful LED light options and how to control them on the FM transmitter.
6. Mantenimiento
- Mantenga el dispositivo seco. La humedad y los líquidos pueden corroer los circuitos electrónicos.
- Do not store the device in extremely hot or cold temperatures.
- No intente desmontar ni modificar el dispositivo. Esto anulará la garantía.
- Limpie el dispositivo con un paño suave y seco. Evite el uso de productos químicos agresivos o limpiadores abrasivos.
- Guarde el dispositivo en un entorno limpio y sin polvo cuando no esté en uso.
7. Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| No sound from car stereo/speakers. |
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| No se puede emparejar con un dispositivo Bluetooth. |
|
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| La carga es lenta o no funciona. |
|
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| Static or poor audio quality (FM Transmitter). |
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8. Especificaciones
| Característica | Detalle |
|---|---|
| Modelo | B0DBV7T5WN |
| Marca | SONRU |
| Tecnología de conectividad | Auxiliar, Bluetooth |
| Estándar de comunicación inalámbrica | Bluetooth 5.3 |
| Power Source (Bluetooth Receiver) | Battery Powered (approx. 15 hours audio/calling, 2.5 hours charging) |
| Charging Ports (FM Transmitter) | PD 30W, QC3.0 18W |
| Características especiales | Bluetooth FM Transmitter, Hands-Free Calls, Noise Cancellation (AEC, ANC), TF Card Playback, Colorful LED Lights |
9. Garantía y soporte
SONRU ofrece una 2 año de garantía for this product. If you encounter any problems or have questions regarding the use of your SONRU Bluetooth AUX Adapter, please do not hesitate to contact our customer support team. We are committed to providing a satisfactory solution.
For support, please refer to the contact information provided on the product packaging or the official SONRU websitio.



