Bluetooth KN321

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The Bluetooth KN321 is a useful tool for playing stereo audio on a reading device. It is a Transmitter/Receiver that can allow adapting Bluetooth capability for devices that do not have Bluetooth support.



[edit] Overview

This small self-powered unit can provide Bluetooth Transmitter (TX) capability to a book reader that has only a audio connector, or it can turn regular cable connected headphones into a Bluetooth receiver (RX). It is a small box 22mm on a side and 12mm thick containing the adapter and a rechargeable battery.

This unit has several product names depending on who is selling it but the model number is always KN321. It is available in retail stores carrying electronic devices. A search for KN321 will find it.

[edit] Specifications

  • Bluetooth 5.0
  • Profiles A2DP and AVRCP (receiver only)
  • Range: ten meters (33 ft) without obstructions
  • battery: Lithium polymer 200mAh
    • Charging time: 2 hrs. Red light charging/Blue light when charged
    • Use Time: 6 hours as receiver, 5 hours as transmitter.
  • Pairing name: as receiver KN321
  • dimensions: 44mm x 44mm x 12mm, 1.73" square by 0.47" thick
  • weight: 18g (0.63oz)
  • audio socket: 3.5mm connector
  • Button: Power, also serves as pairing mode. Press for several seconds to turn on or off.
  • switch: RX mode (blue LED) - TX mode (red LED)
  • Package contents:
    • Bluetooth adapter 2-in-1
    • micro USB power cable
    • stereo RCA cable adapter with 3.5mm audio connector
    • dual end 3.5mm cable connector
    • manual in English, French, German, Italian, Spanish

[edit] Setup RX

Pairing Name is KN321 for the Bluetooth connection of the device to pair. Blue light flashes two times a second when pairing and once every 3 seconds when pairing is successful.

[edit] Setup TX

Searching for other devices is automatic. To ensure success turn on the headphones or receiving device and make sure other Bluetooth devices are turned off. Red light flashes two times per second when pairing and once every 3 seconds when paired.

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