SONRU Bluetooth 5.0 Aux Adapter User Manual

1. Introduction

The SONRU Bluetooth 5.0 Aux Adapter is designed to provide wireless audio streaming and hands-free calling capabilities to devices lacking built-in Bluetooth. It can connect to car stereo systems, home audio setups, and wired headphones via a 3.5mm AUX cable or adapter, offering a seamless wireless experience.

Image: The SONRU Bluetooth 5.0 Aux Adapter, a compact black circular device with a glowing blue LED ring, connected via a 3.5mm audio jack.

2. Features

• Advanced Bluetooth 5.0: Ensures faster and more stable connectivity with support for A2DP, AVRCP, HSP, and HFP profiles.
• Clear Hands-Free Calling: Built-in microphone allows for simple call management (Answer/End/Reject calls, Redial last number) while driving.
• Dual Connection: Connects to two Bluetooth devices simultaneously.
• Wide Compatibility: Ideal for home or vehicle audio systems, compatible with most Bluetooth-enabled devices like smartphones (iPhone and Android), MP3 players, CD players, and tablets.
• Long Play Time: Up to 12.8 hours of continuous music streaming, radio, GPS, or hands-free phone calls on a single charge.
• Compact Design: Super mini size for portable and flexible use.

Image: A graphic illustrating the adapter's battery life: 12.8 hours music/talking, 250 hours standby, and 1.2 hours charging time.

3. Package Contents

• Bluetooth Receiver
• User Manual
• 3.5mm Metal Audio Adapter
• 3.5mm Audio Cable
• Micro USB Charging Cable
• RCA Cable (may vary by package)

Image: A visual representation of the package contents, including the Bluetooth receiver, user manual, 3.5mm metal audio adapter, 3.5mm audio cable, and Micro USB charging cable.

4. Safety Information

For safe use of this Bluetooth audio adapter, please follow these guidelines:

• Use the recommended batteries and handle them properly, avoiding short-circuits and disposal in fire.
• Be aware of potential interference with other wireless devices and maintain a safe distance between them.
• Use the device in environments with appropriate temperature and humidity levels to prevent damage.

5. Setup and Installation

Initial Charging

Before first use, fully charge the receiver. Connect the Micro USB charging cable to the charging port of the receiver and a power source. The light indicator will turn red during charging and turn off once charging is complete. A full charge typically takes about 1.2 hours.

Connecting to Audio System

The adapter can be connected to various audio systems:

• Home Stereo: Use the provided 3.5mm audio cable or RCA cable (if applicable) to connect the receiver to your home stereo system's AUX input.
• Car Stereo: Plug the receiver directly into the car's 3.5mm AUX input using the metal audio adapter or the 3.5mm audio cable. Ensure your car stereo is set to AUX mode.
• Wired Headphones: Connect your wired headphones to the receiver's 3.5mm audio output.

Image: A visual guide showing the three steps for setup: 1. Turn the receiver on, 2. Plug the receiver into the stereo system, 3. Connect with your Bluetooth devices.

Bluetooth Pairing

1. Power On: Long press the multi-function button on the receiver for about 3 seconds until the blue and red indicator lights flash alternately. This indicates pairing mode.
2. Enable Bluetooth: Turn on the Bluetooth function on your smartphone or other device.
3. Search and Connect: Search for Bluetooth devices and select "Link-BT4831" (or similar name).
4. Enter Passcode (if needed): If prompted, enter the code "0000".
5. Confirmation: Once successfully paired, the blue indicator light will flash slowly. The receiver will automatically connect to the last paired phone when powered on.

Dual Bluetooth Device Connection

The receiver supports connecting to two Bluetooth devices simultaneously:

1. Pair the first phone to the receiver as described above.
2. After the first phone is successfully connected, turn off its Bluetooth function. The receiver will re-enter pairing mode.
3. Pair the second phone to the receiver.
4. Turn on the Bluetooth function of the first phone. Both phones should now be connected to the receiver.

6. Operating Instructions

Music Playback

• Play/Pause: Press the multi-function button once to play or pause music.
• Next Track: Double-press the multi-function button to skip to the next track.
• Previous Track: Triple-press the multi-function button to go to the previous track.

Hands-Free Calling

• Answer/End Call: Press the multi-function button once to answer an incoming call or end an ongoing call.
• Reject Call: Long press the multi-function button to reject an incoming call.
• Redial Last Number: Double-press the multi-function button when not on a call to redial the last dialed number.
• Switch to Private Mode: During a call, long press the multi-function button to switch the call audio between the receiver and your phone.

Image: A car interior showing the Bluetooth adapter plugged into the dashboard, with two smartphones displaying incoming call and music playback screens, highlighting the hands-free calling feature.

7. Maintenance

• Keep the receiver away from excessive heat and humidity.
• Do not immerse the receiver in water or expose it to high temperatures.
• Avoid dropping or knocking the receiver, as this may cause damage.
• Do not use chemicals or detergents to clean the receiver. Use a soft, dry cloth.
• If the receiver is not used for a long period, its battery performance may decrease. Charge it regularly to maintain battery health.

8. Troubleshooting

9. Specifications

10. Warranty and Support

SONRU provides a 12-month quality warranty for this product. Additionally, a one-month money-back guarantee is offered for any reason.

For further assistance, technical support, or warranty claims, please contact SONRU customer service through the platform where you purchased the product.