ATUOTIN BT 5.4 Audio Receiver Transmitter User Manual

1. Introduction

This manual provides comprehensive instructions for the safe and effective use of your ATUOTIN BT 5.4 Audio Receiver Transmitter. This versatile device functions as both a Bluetooth receiver and transmitter, allowing you to wirelessly stream audio to and from various devices such as TVs, car stereos, home stereo systems, PCs, and speakers. Please read this manual thoroughly before operation and retain it for future reference.

2. Safety Warnings and Precautions

WARNING: Read all instructions carefully before using this product. Keep this manual for future reference.

• WARNING: Do not use the product for any purpose other than its intended use. Misuse may cause injury, damage to the product, or other hazards.
• WARNING: Keep this product out of the reach of children under 3 years, unless under direct adult supervision. Small parts may cause choking hazard.
• WARNING: Do not disassemble, modify, or repair the product by yourself. Improper operation may cause electric shock, fire, or product failure. Contact professional maintenance personnel if needed.
• WARNING: Do not use the product near water or in humid environments. Avoid contact with liquids to prevent electric shock. Unplug the power supply when not in use or during cleaning.
• WARNING: Dispose of the product and its packaging in accordance with EU WEEE (Waste Electrical and Electronic Equipment) Directive 2012/19/EU and RoHS Directive 2011/65/EU. Do not discard as household waste.
• ATTENTION: Not suitable for children under 36 months. Contains small parts that may cause choking hazard. Use under adult supervision.
• ATTENTION: Protective equipment should be worn. Not to be used in traffic. This product requires high skills to avoid falls or collisions.
• ATTENTION: Only to be used in water in which the child is within its depth and under adult supervision.
• ATTENTION: Not suitable for children under 3 years. For use under adult supervision. Contains substances that may cause irritation if misused. Follow the instructions strictly.

3. Package Contents

Please check the package for the following items:

• 1 x ATUOTIN BT 5.4 Audio Receiver Transmitter
• 1 x 3.5mm Audio Cable
• 1 x 3.5mm to RCA Audio Cable
• 1 x USB-A to USB-C Charging Cable
• 1 x User Manual (PDF version available online)

If any items are missing or damaged, please contact customer support.

4. Product Overview

The ATUOTIN BT 5.4 Audio Receiver Transmitter features a multi-functional design with user-friendly operation and energy-efficient performance. It is equipped with various input/output options and a digital display screen for easy mode switching and status indication.

Key Components:

1. Volume Decrease / Previous Track button
2. Power On/Off / Pause/Play / Switch Modes button
3. Volume Up / Next Track button
4. Switching Modes button (M)
5. Digital Display Screen
6. RCA Lotus Interface (Input/Output)
7. Coaxial Interface (Input/Output)
8. Fiber Optic Interface (Input/Output)
9. Audio Interface (3.5mm AUX Input/Output)
10. 5V Charging Interface (USB-C)
11. TF Card Slot
12. USB Interface (for USB drive playback)

5. Setup

5.1. Unpacking and Initial Inspection

After opening the package, verify that the product is complete and undamaged. If any components are missing or appear damaged, do not proceed with installation and contact customer support.

5.2. Charging the Device

Connect the provided USB-A to USB-C cable to the 5V Charging Interface (10) on the device and a suitable USB power adapter (not included). The device takes approximately 2 hours to fully charge, providing about 12 hours of working time.

6. Operating Instructions

The device supports two main modes: Receiver Mode (RX) and Transmitter Mode (TX). Use the switch on the side of the product to select the desired mode.

6.1. Receiver Mode (RX)

In RX mode, the device upgrades traditional speakers (home stereo, car speakers) to Bluetooth-enabled systems, allowing them to receive audio wirelessly from your phone, tablet, or PC. The RX mode supports Bluetooth, USB disk, TF card, optical fiber, and coaxial audio inputs.

6.1.1. Bluetooth Mode (RX)

1. Connect the 3.5mm-to-3.5mm audio cable or 3.5mm-to-RCA audio cable from the device's Audio Interface (9) or RCA Lotus Interface (6) to your speaker's input.
2. Set the side switch of the product to the RX position.
3. Long press the 'M' button (2) to turn on the product. It will enter Bluetooth mode by default, and the 'RX' logo on the digital display screen (5) will flash.
4. On your mobile phone or other Bluetooth device, enable Bluetooth and search for the pairing name "RT06". Select it to pair.
5. Once pairing is successful, the 'RX' logo light on the display will stop flashing, indicating a stable connection. You can now stream audio wirelessly.

6.1.2. USB Disk / TF Card Mode (RX)

1. Long press the 'M' button (2) to turn on the product.
2. Insert a USB disk into the USB Interface (12) or a TF card into the TF Card Slot (11). The product will automatically enter the corresponding mode (USB or TF card). You can also double-click the 'M' button (4) to switch between modes.
3. Ensure your speakers are connected to the device via the appropriate audio cable (3.5mm or RCA).
4. The device will play audio directly from the inserted media.

6.1.3. Fiber Optic / Coaxial Mode (RX)

1. Connect one end of a fiber optic or coaxial cable to your audio source device (e.g., TV, CD player) and the other end to the Fiber Optic Interface (8) or Coaxial Interface (7) on the product.
2. Connect your speakers to the device using a 3.5mm-to-3.5mm or 3.5mm-to-RCA audio cable.
3. The device will receive digital audio from your source and output it to your speakers. Double-click the 'M' button (4) to switch to the correct input mode if needed.

6.2. Transmitter Mode (TX)

In TX mode, the device enables non-Bluetooth audio sources (e.g., TVs, computers, amplifiers) to transmit audio wirelessly to Bluetooth headphones or speakers.

The TX mode supports LINE (3.5mm AUX), USB disk, TF card, fiber optic, and coaxial audio inputs.

6.2.1. LINE Mode (TX)

1. Connect one end of the 3.5mm-to-3.5mm audio cable or 3.5mm-to-RCA audio cable to your TV or other audio source device, and the other end to the Audio Interface (9) or RCA Lotus Interface (6) on the product.
2. Set the side switch to the TX position.
3. Press and hold the 'M' button (2) to turn on the device. It will default to LINE mode and automatically search for surrounding Bluetooth receiver devices. The 'TX' logo on the digital display screen (5) will flash.
4. Turn on your Bluetooth headset or Bluetooth speaker and put it into pairing mode. The product will automatically pair with your Bluetooth device.
5. After successful pairing, the 'TX' logo light will stop flashing, and you can begin enjoying wireless audio.

6.2.2. USB Disk / TF Card Mode (TX)

1. Set the side switch to the TX position.
2. Press and hold the 'M' button (2) to turn on the device. It will default to LINE mode and automatically search for surrounding Bluetooth receiver devices. The 'TX' logo on the digital display screen (5) will flash.
3. Turn on your Bluetooth headset or Bluetooth speaker and put it into pairing mode. The product will automatically pair with your Bluetooth device.
4. Once pairing is successful, the 'TX' logo light will stop flashing.
5. Now, insert a USB disk into the USB Interface (12) or a TF card into the TF Card Slot (11). The device will automatically enter USB disk or TF card mode, and the 'USB' or 'TF' logo light on the screen will illuminate.
6. Note: If you insert a USB disk or TF card before pairing is successful, you will need to double-click the 'M' button (4) to switch to the USB disk or TF card mode after pairing is successful.

6.2.3. Fiber Optic / Coaxial Mode (TX)

1. Connect one end of a fiber optic or coaxial audio cable to your audio source device (e.g., TV) and the other end to the Fiber Optic Interface (8) or Coaxial Interface (7) on the product.
2. Set the side switch to the TX position.
3. Press and hold the 'M' button (2) to turn on the device. It will default to LINE mode and automatically search for surrounding Bluetooth receiver devices. The 'TX' logo on the digital display screen (5) will flash.
4. Turn on your Bluetooth headset or Bluetooth speaker and put it into pairing mode. The product will automatically pair with your Bluetooth device.
5. After successful pairing, the 'TX' logo light will stop flashing. Double-click the 'M' button (4) to switch to optical fiber or coaxial mode.
6. Note: Always ensure pairing is successful before attempting to switch to fiber optic or coaxial input modes in TX.

6.3. General Operation

• Power On/Off: Long press the 'M' button (2).
• Play/Pause: Short press the 'M' button (2).
• Volume Control: Use the Volume Decrease (1) and Volume Up (3) buttons.
• Previous/Next Track: Long press the Volume Decrease (1) for previous track, and Volume Up (3) for next track.
• Switch Modes (RX/TX): Use the physical switch on the side of the device.
• Switch Input Sources (within RX/TX mode): Double-click the 'M' button (4).

7. Maintenance

7.1. Cleaning

Wipe off surface dust or stains promptly after use with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.

7.2. Storage

When not in use, store the product in a dry, well-ventilated location, away from direct sunlight and extreme temperatures.

8. Troubleshooting

If you encounter issues with your ATUOTIN BT 5.4 Audio Receiver Transmitter, please refer to the following common solutions:

• Device won't power on: Ensure the device is fully charged. Connect it to a power source using the USB-C cable.
• Cannot pair in RX/TX mode: Make sure the device is in the correct RX or TX mode using the side switch. Ensure the receiving/transmitting device (e.g., phone, headphones) is in pairing mode and within the 10m/33ft unblocked transmission distance. Restart both devices and try again.
• No audio output/input: Check all cable connections (3.5mm, RCA, fiber optic, coaxial) are secure and connected to the correct ports. Ensure the correct input source is selected by double-clicking the 'M' button (4). Verify the volume levels on both the transmitter/receiver and the connected audio device.
• Intermittent audio or poor quality: Reduce the distance between the device and the paired Bluetooth device. Ensure there are no obstructions (walls, large metal objects) between them. Avoid using the device near other strong wireless signals (Wi-Fi routers, microwaves) that might cause interference.
• USB disk/TF card not playing: Ensure the media is inserted correctly and contains compatible audio files. Double-click the 'M' button (4) to ensure the device is in USB or TF card mode.

If the problem persists, please refer to the official PDF user manual or contact customer support.

9. Specifications

10. User Tips

• For optimal audio quality, ensure your audio cables are of good quality and securely connected.
• When switching between RX and TX modes, always use the physical switch on the side of the device.
• If you experience pairing difficulties, try clearing previous Bluetooth connections on both the adapter and your target device.
• The digital display is useful for confirming the current mode (RX/TX) and input source (BT, USB, TF, LINE, OPT, COA).

11. Warranty and Support

For warranty information, technical support, or to report any issues with your product, please refer to the seller's official website or contact their customer service directly. Keep your purchase receipt as proof of purchase.

A detailed user manual in PDF format is available for download at: Official User Manual (PDF)

12. Compliance Information

This product complies with the essential requirements and other relevant provisions of EU WEEE (Waste Electrical and Electronic Equipment) Directive 2012/19/EU and RoHS Directive 2011/65/EU. Do not dispose of this product as unsorted municipal waste. Please dispose of it at a designated collection point for the recycling of electrical and electronic equipment.