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SPECIFICATIONS
Audio encoding technology: SBC
Audio sample rate: Supports up to 16bit/44.1kHz
Bluetooth protocol (RX): A2DP
Bluetooth protocol (TX): A2DP,AVRCP,HSP,HFP
Bluetooth version: Bluetooth 5.1
Brand Name: UGREEN
Certification: CE,FCC,CE, FCC, SRRC, IC, TELEC,BQB
Content: AUDIO
Driver Installation: Plug & Play
Function 1: Power isolation function
Function 2: Force pairing function
Function 3: Button reconnection function
Function 4: Factory settings can be restored by pressing the function key 5 times in a row in power-on mode.
Function 5: Indicator light
Function 6: RX mode support connect 2 devices at one time
High Definition Support: None
High-concerned chemical: None
Interface: 3.5 MM,USB
Model Number: CM523(60300)
Operating frequency: 2.400GHz-2.4835GHz
Origin: Mainland China
Package: Yes
Power on/off operation: Plug in and power on / Unplug and power off
Power supply requirements: USB-A interface power supply, specification: DC5±0.25V, ≥200mA
Product Name: Bluetooth Receiver & Transmitter / Bluetooth Receiver / Bluetooth Transmitter / Bluetooth AUX Adapter / Bluetooth Adapter / Bluetooth Wireless Adpter
Response frequency: 20-20KHz
SNR (RX): ≥90dB
SNR (TX): ≥80dB
Sound Track: Double
Support AAC: No
Support Apt-x: No
Support Memory Card: No
Transmission distance: 10m
WIFI Standard: None
Wireless Type: Bluetooth
Working mode: Receive mode (RX) & Transmit mode (TX)
2-IN-1 Bluetooth5.1
Receiver & Transmitter
·Bluetooth 5.1 ·10M Distance ·Handsfree ·Driver free
Bluetooth 5.1 Stable Singal Transmission
Enjoy stereo sound effect without delay, offers a 10m stable connection and supports SBC codec, delivering clear, functional, and enjoyable sound—both for listening and for speaking. (Note: Phone calls only be supported in RX mode, not in TX mode). 
One Key Switch, toggle the button to switch TX or RX mode
A perfect combination of transmitting & receiving
Transmitter Mode
Upgrade a non-Bluetooth device to a Bluetooth transmitter
Receiver Mode
Add Bluetooth functionality to non-Bluetooth device
Add Bluetooth to Your Car
·Handsfree Calling ·Play Music
One-to-Two Pairing
Connect two phones/laptops to use.
PS: Only RX(Receiver mode) can support dual pairing,TX (Transmittermode) can not support connect 2 earphones.
Vast Compatibility
Small and Exquisite
Comfortable hand feeling, stable sound quality
HiFi Performance, High-Quality Stereo
Support SBC audio decoding, this Bluetooth 5.1 Adapter is able to let you enjoy the experience of exquisite high school, high-range, and low-frequency sound effects so that you will not miss all the wonderful sounds.
Plug & Play
You don't need to install a driver for any compatible device. Both the 3.5mm and USB-A ports need to be connected, then you can directly connect it to your Bluetooth devices, very easy and convenient.
Product Overview
Usage Steps of TX Mode
Usage Steps of RX Mode
Bluetooth Connection
LED Indicator Light Status
Product Specifications
Product Listing
>>>NOTE:
If the product fails to pair or the light does not light up, you can use the following solutions：
1. Check whether the power supply of the USB interface is normal.
It is recommended to connect the 5V/1A power supply.
2. Check the mode of the product, you can switch to the corresponding mode (transmitting mode or receiving mode) through the side button.
3. Check whether the pairing operation is correct, refer to the specific steps in the manual.
4. Please restore the product to factory settings,then try pairing again.
If it still can't solve it, please consult us at once and we will assist you.
