User Manual: KN319/KN321 Bluetooth 5.0 Audio Receiver Transmitter

Introduction

The ICANING KN319/KN321 is a versatile 2-in-1 Bluetooth 5.0 Audio Receiver and Transmitter, designed to provide a seamless wireless audio experience. This compact device allows you to effortlessly stream audio from non-Bluetooth devices to Bluetooth headphones/speakers (Transmitter Mode) or from Bluetooth-enabled devices to wired audio systems (Receiver Mode). Its portable design and broad compatibility make it an ideal audio solution for various settings, including home entertainment systems, car audio, and personal listening.

Specifications

Package Contents

Please check the package carefully to ensure all items are present:

• 1x Bluetooth 4.2/5.0 Audio Transmitter/Receiver Adapter (KN319 or KN321 model)
• 1x Micro USB Power Cable
• 1x RCA Cable
• 1x 3.5mm Aux Cable
• 1x User Manual

Product Overview

The KN319/KN321 adapter features a compact design with essential ports and controls for easy operation.

• Power Button: Used to turn the device on or off.
• RX/TX Switch: Toggles between Receiver (RX) and Transmitter (TX) modes.
• Status Indicator Light: Displays the current operating status (e.g., pairing, connected, charging).
• Micro USB Charging Port: For connecting the Micro USB power cable to charge the device.
• 3.5mm Audio Jack: For connecting the 3.5mm AUX cable or RCA cable (via adapter) to audio devices.

Setup

1. Charging the Device

1. Connect the Micro USB power cable to the adapter's Micro USB charging port.
2. Plug the other end of the Micro USB cable into a USB power source (e.g., USB wall adapter, computer USB port).
3. The status indicator light will typically show red during charging and turn off or change color when fully charged. A full charge takes approximately 2 hours.

2. Powering On/Off

• To Power On: Press and hold the power button until the status indicator light turns on.
• To Power Off: Press and hold the power button until the status indicator light turns off.

3. Selecting Operating Mode (TX/RX)

Before connecting, determine whether you need to transmit or receive audio and set the mode switch accordingly.

• TX (Transmitter) Mode: Use this mode to send audio wirelessly from a non-Bluetooth device (e.g., TV, PC) to Bluetooth headphones or speakers.
• RX (Receiver) Mode: Use this mode to receive audio wirelessly from a Bluetooth-enabled device (e.g., smartphone, tablet) and play it through a wired audio system (e.g., car stereo, home speakers).

Operating Modes

Transmitter Mode (TX)

In TX mode, the adapter will transmit audio from a non-Bluetooth source to a Bluetooth receiving device.

1. Set the mode switch on the adapter to TX.
2. Connect the adapter to your non-Bluetooth audio source (e.g., TV, computer, CD player) using the 3.5mm AUX cable or the RCA cable (if your source has RCA outputs).
3. Power on the adapter. The status indicator light will flash, indicating it's in pairing mode.
4. Put your Bluetooth headphones or speakers into pairing mode.
5. The adapter will automatically search for and connect to your Bluetooth receiving device. Once connected, the status indicator light will typically become solid blue or flash slowly.
6. Adjust the volume on your receiving device or audio source as needed.

Receiver Mode (RX)

In RX mode, the adapter will receive audio from a Bluetooth-enabled device and play it through a wired audio system.

1. Set the mode switch on the adapter to RX.
2. Connect the adapter to your wired audio system (e.g., home stereo, car speakers, wired headphones) using the 3.5mm AUX cable or the RCA cable.
3. Power on the adapter. The status indicator light will flash, indicating it's in pairing mode.
4. On your Bluetooth-enabled device (e.g., smartphone, tablet, computer), go to its Bluetooth settings and search for available devices.
5. Select "KN319" or "KN321" (or similar name) from the list to pair. Once connected, the status indicator light will typically become solid blue or flash slowly.
6. Play audio on your Bluetooth-enabled device. The sound will now be routed through your wired audio system. Adjust volume on your source device or wired system.

Troubleshooting

• No Power: Ensure the device is fully charged. Connect it to a power source using the Micro USB cable.
• Cannot Pair:
  • Make sure the adapter is in the correct TX or RX mode.
  • Ensure both the adapter and the target Bluetooth device are in pairing mode (indicator light flashing).
  • Move the devices closer to each other (within 10 meters/33 feet).
  • Turn off and on both devices, then try pairing again.
  • Clear previous Bluetooth connections on your source/receiving device if possible.
• No Sound:
  • Check if the adapter is successfully paired and connected (solid blue light or slow flash).
  • Verify that the audio cables (3.5mm AUX or RCA) are securely connected to both the adapter and your audio source/system.
  • Ensure the volume on both the adapter (if applicable, though this model has no volume control) and the connected audio device is turned up.
  • Confirm the correct input is selected on your audio system (e.g., AUX input).
• Short Range or Intermittent Connection:
  • Reduce the distance between the adapter and the paired Bluetooth device.
  • Remove any obstacles (walls, large furniture) between the devices.
  • Avoid placing the adapter near other wireless devices (Wi-Fi routers, cordless phones) that might cause interference.

Maintenance

• Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid cleaners or solvents.
• Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
• Battery Care: To prolong battery life, avoid fully discharging the device frequently. If storing for a long period, charge it to about 50% every few months.
• Handling: Avoid dropping or subjecting the device to strong impacts, as this can damage internal components.

User Tips

• Optimal Performance: Keep the adapter fully charged for the best continuous use time and stable connection.
• Range Considerations: While the device has a range of up to 33ft, performance can be affected by physical obstructions and interference. For best results, maintain a clear line of sight between the adapter and the paired device.
• Cable Management: Use the provided cables and ensure they are not kinked or strained to prevent damage and ensure reliable audio transmission.
• Mode Switching: Always ensure the TX/RX switch is set to the desired mode before attempting to connect or pair devices.

Warranty & Support

This product comes with a standard manufacturer's warranty. For specific warranty details, please refer to the documentation provided at the time of purchase or contact your retailer. If you encounter any issues or require technical assistance, please reach out to the seller or manufacturer's customer support for guidance.