UGREEN CM523 Bluetooth Audio Transceiver

Thank you for purchasing the UGREEN CM523. Please read these instructions carefully before use and keep them for future reference. Pay attention to safety instructions. For questions or comments, contact customer support.

Importer: Alza.cz a.s., Jankovcova 1522/53, Holešovice, 17000 Prague 7, Czech Republic. Contact: www.alza.co.uk/kontakt or +44 (0)203 5144411.

Product Overview

• USB-A Power Supply
• 3.5mm Audio Input/Output
• TX/RX Switch Button
• Multifunction Button (MFB)
• Indicator LED
• Microphone

TX Mode Connection (Transmitter)

This mode allows you to transmit audio from a source device to Bluetooth headphones or speakers.

1. Set the switch button to "TX".
2. Connect the CM523 to your audio source device (e.g., TV, PC/laptop, PS5) using the 3.5mm audio cable.
3. Plug the USB-A end of the CM523 into a USB power source (e.g., PC/laptop, TV, charger). The device will power on, and the LED indicator will glow for 1 second.
4. The CM523 will enter pairing mode, indicated by the LED blinking blue and red alternately.
5. Set your Bluetooth headphones or speakers to pairing mode.
6. Once successfully paired, the LED indicator will blink blue slowly.

Diagram Description:

The diagram shows a UGREEN CM523 device connected via a 3.5mm audio cable to a TV or Laptop. An arrow indicates the audio signal going from the TV/Laptop to the CM523. Another arrow shows the CM523 transmitting a Bluetooth signal to a Bluetooth Earphone or Bluetooth Speaker.

RX Mode Connection (Receiver)

This mode allows you to receive audio from a Bluetooth-enabled device (like a phone) and play it through wired speakers or amplifiers.

Connecting to One Phone

1. Set the switch button to "RX".
2. Connect the CM523 to your audio output device (e.g., amplifier, speaker) using the 3.5mm audio cable.
3. Plug the USB-A end of the CM523 into a USB power source. The device will power on with the LED glowing for 1 second and a voice prompt saying "Power on".
4. The CM523 will enter pairing mode, indicated by the LED blinking blue and red alternately.
5. On your phone, search for "UGREEN-60300" in the Bluetooth list and connect. A successful connection is indicated by the LED blinking blue slowly and a voice prompt saying "Bluetooth connected".

Connecting to Two Phones

1. Follow the steps for connecting to one phone to connect the CM523 to the first phone. Then, turn off Bluetooth on the first phone.
2. On the second phone, search for "UGREEN-60300" and connect.
3. Turn on Bluetooth on the first phone. It should automatically reconnect to the CM523. If not, manually reconnect from the Bluetooth list.
4. You can now play music from either phone. If music plays correctly, the one-to-two pairing is successful.

Tips:

• In RX mode: Press the MFB once to play/pause music or answer/end calls. Press and hold the MFB for 2 seconds to reject a call.
• When connected to two phones, you can only play music from one phone at a time. To switch, pause music on the current phone before playing on the other.

Bluetooth Connection Failure & Solution

If the Bluetooth connection fails, ensure the device is powered on. To reset the CM523, press the MFB five times until the LED glows solid blue for 5 seconds.

Diagram Description:

The diagram shows a phone with Bluetooth enabled. A Bluetooth signal is transmitted from the phone to the UGREEN CM523 device. The CM523 is then connected via a 3.5mm audio cable to a speaker.

Specifications

Package Contents

• 1 x Bluetooth Audio Transceiver
• 1 x 3.5mm Audio Cable
• 1 x User Manual

Warranty Conditions

A new product purchased from Alza.cz sales network is guaranteed for 2 years. For repairs or services during the warranty period, contact the seller directly and provide the original proof of purchase with the date.

The warranty does not cover:

• Using the product for purposes other than intended or failing to follow maintenance, operation, and service instructions.
• Damage caused by natural disasters, unauthorized intervention, or mechanical damage due to the buyer (e.g., during transport, improper cleaning).
• Natural wear and aging of consumables or components (e.g., batteries).
• Exposure to adverse external influences like sunlight, radiation, electromagnetic fields, liquid ingress, object ingress, power surges, electrostatic discharge (including lightning), faulty supply or input voltage, or incorrect polarity.
• Modifications, alterations, or use of non-original components.

EU Declaration of Conformity

This product complies with all essential requirements of applicable EU Directives for safe use, including requirements for the content of hazardous substances.

WEEE

This product must not be disposed of as normal household waste according to EU Directive WEEE (2012/19/EU). Return it to the place of purchase or a public collection point for recyclable waste. Proper disposal helps prevent negative environmental and health consequences. Contact your local authority or collection point for details. Improper disposal may result in fines.