RETOO TechPro Bluetooth Audio Adapter

Introduction

The RETOO TechPro Bluetooth Audio Adapter (Model E062) is a versatile device designed to add Bluetooth 5.0 capabilities to your existing audio equipment. It functions as both a transmitter (TX) and a receiver (RX), allowing you to wirelessly stream audio to and from a wide range of devices. This manual provides detailed instructions for setup, operation, and maintenance to ensure optimal performance.

The device enables wireless transmission of audio from a smartphone or laptop with Bluetooth functionality to audio devices equipped with a 3.5mm or RCA jack input that do not natively support Bluetooth. Conversely, it also allows you to transmit audio from devices with Jack and RCA outputs to Bluetooth-enabled headphones and speakers.

Specifications

Product Overview

Familiarize yourself with the components and indicators of your RETOO TechPro Bluetooth Audio Adapter:

1. Transmission Status Indicator: Lights up when in Transmitter (TX) mode.
2. Bluetooth Indicator: Shows Bluetooth connection status.
3. Multi-function Buttons: Used for various controls (e.g., pairing, play/pause).
4. Function Status Indicators: Provide visual feedback on current mode or status.
5. Audio Output (Transmitting): 3.5mm jack for connecting to audio sources in TX mode.
6. USB Port: Micro USB port for charging the device.
7. Audio Output (Receiver): 3.5mm jack for connecting to audio output devices in RX mode.

Setup and Operation

Charging the Device

Before first use, fully charge the adapter. Connect the included Micro USB cable to the device's USB port (6) and the other end to a 5V USB power source (e.g., computer USB port, USB wall adapter). The device can operate while charging.

Note: Using the product while charging, especially in transmission mode, may introduce noise due to current interference. For best audio quality, use on battery power when possible.

Switching Modes (Transmitter TX / Receiver RX)

The adapter supports both Transmitter (TX) and Receiver (RX) modes. The mode is typically selected via a physical switch on the device or automatically detected based on the connection. Refer to the device's indicators (1 and 4) to confirm the active mode.

Transmitter (TX) Mode)

In TX mode, the adapter transmits audio from non-Bluetooth devices to Bluetooth-enabled headphones or speakers. This allows you to send audio from devices such as:

• TVs
• CD players
• MP3 players
• Other audio devices

To:

• Bluetooth speakers
• Bluetooth headphones

1. Connect the adapter to your audio source (e.g., TV, CD player, MP3 player) using the 3.5mm audio cable connected to the Audio Output (Transmitting) port (5). If your source uses RCA, an appropriate RCA to 3.5mm adapter may be required.
2. Ensure the adapter is in TX mode.
3. Turn on your Bluetooth headphones or speakers and put them into pairing mode.
4. The adapter will automatically search for and connect to nearby Bluetooth devices. The Bluetooth Indicator (2) will show connection status.

Low-latency technology allows for real-time voice transmission, making it suitable for online games and television viewing.

Receiver (RX) Mode

In RX mode, the adapter receives audio from Bluetooth-enabled devices (like smartphones or laptops) and outputs it to non-Bluetooth audio systems (like car stereos, home speakers, or wired headphones).

1. Connect the adapter to your audio output device (e.g., car stereo AUX input, home speaker system, wired headphones) using the 3.5mm audio cable connected to the Audio Output (Receiver) port (7). If your system uses RCA, an appropriate 3.5mm to RCA adapter may be required.
2. Ensure the adapter is in RX mode.
3. On your smartphone or other Bluetooth-enabled device, search for and connect to the adapter (it should appear as "RETOO TechPro" or similar).
4. Once connected, audio played on your Bluetooth device will be streamed to your connected audio system.

Troubleshooting

• No Power: Ensure the device is charged. Connect it to a 5V USB power source using the Micro USB cable.
• Cannot Pair:
  • Ensure the adapter is in the correct TX/RX mode for your intended use.
  • Make sure the target Bluetooth device (headphones/speakers in TX mode, smartphone in RX mode) is in pairing mode.
  • Move the adapter closer to the target device (within 10m).
  • Turn off and on both the adapter and the target device, then try pairing again.
• No Audio:
  • Check all cable connections (3.5mm or RCA) are secure.
  • Ensure the volume on both the adapter and the connected audio device is turned up.
  • Verify the adapter is in the correct TX/RX mode.
  • Confirm successful Bluetooth pairing (check Bluetooth indicator).
• Audio Noise/Interference:
  • Avoid using the device while charging, especially in TX mode, as this can introduce noise.
  • Move the device away from other electronic devices that might cause interference.
  • Ensure the audio cables are not damaged.

Maintenance

• Keep the device dry. Moisture can damage internal circuits.
• Do not expose the device to extreme temperatures.
• Clean the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
• Store the device in a cool, dry place when not in use.
• Avoid dropping or subjecting the device to strong impacts.

User Tips

• For optimal sound quality, ensure the adapter is fully charged before extended use, especially in TX mode, to avoid potential charging-related noise.
• When connecting to older audio systems (like some TVs or stereos), you might need an RCA to 3.5mm adapter cable, which may not be included.
• If experiencing connection issues, try resetting both the adapter and the paired Bluetooth device.
• The low-latency technology makes this adapter suitable for real-time audio transmission, such as for online gaming or watching TV, minimizing audio delay.
• This adapter can be used to create a car audio kit, allowing your car radio to play music from your phone via Bluetooth.
• It can extend the function of wired earphones, enabling them to connect to a Bluetooth-enabled device.
• It facilitates connecting a Bluetooth-free tower speaker system with Bluetooth headphones.

Package Contents

Upon unpacking, please verify that all items are present:

• RETOO TechPro Bluetooth Audio Adapter (Model E062)
• USB Charging Cable (Micro USB)
• 3.5mm Audio Cable
• Instruction Manual
• Original Packaging

Safety Information

• Do not disassemble, repair, or modify the product.
• Keep out of reach of children.
• Dispose of the product and its battery responsibly according to local regulations.
• Avoid prolonged exposure to high volume levels when using headphones to prevent hearing damage.

Warranty and Support

For warranty information and technical support, please refer to the official RETOO website or contact your retailer. Keep your proof of purchase for any warranty claims.