
UGREEN Bluetooth 5.1 Transmitter Receiver | 60300
The UGREEN CM523 (item 60300) is a small 2-in-1 Bluetooth 5.1 audio adapter that works as a transmitter (TX) or a receiver (RX). It takes power from a USB-A port and connects to your audio device through its 3.5mm jack, with a 1 m 3.5mm audio cable in the box, so you can add wireless sound to a TV, computer, car stereo or wired speaker.
Transmitter mode (TX): Set the switch to TX and the adapter sends sound from a device without Bluetooth, such as a TV, a computer, a Nintendo Switch or a PS4, to your Bluetooth headphones or speaker. This lets you watch or play with wireless headphones without disturbing others.

Receiver mode (RX): Set the switch to RX and the adapter receives music from your phone and plays it through a car stereo, an amplifier or a speaker that has a 3.5mm AUX input. In RX mode you can pair two devices at the same time, for example two phones.

Hands-free calls: A built-in microphone lets you take phone calls in receiver mode, which is useful in a car with an AUX input. The microphone works in RX mode only.
Bluetooth 5.1, up to 10 m: The Bluetooth 5.1 connection reaches up to 10 m. It supports the A2DP, AVRCP, HSP and HFP profiles and passes audio from 20Hz to 20kHz.

USB powered, plug and play: The adapter draws its power from a USB-A port. An LED indicator shows its status.
Good to know
Pairing two devices at the same time works in receiver (RX) mode only. The USB-A plug is used for power; the audio goes through the 3.5mm jack and the included cable.
Technical Specifications
| Model | CM523 |
| Item Number | 60300 |
| Bluetooth Version | 5.1 |
| Modes | Transmitter (TX) / Receiver (RX) |
| Bluetooth Profiles | A2DP, AVRCP, HSP, HFP |
| Audio Codec | SBC |
| Range | Up to 10 m |
| Frequency Response | 20Hz - 20kHz |
| Power | USB-A |
| Audio Connector | 3.5mm jack |
| Microphone | Built-in (RX mode) |
| Dimensions | 48 x 19 x 8.5 mm |
| In the Box | Adapter, 3.5mm audio cable (1 m), user manual |
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