Product features

1. Supports NFC near-field pairing, with NFC automatically turning on or off Bluetooth wireless connection during pairing

2.3.5mm AV audio output interface for a wider range of customers

3. Support USB playback

4. Adopting the latest power isolation technology, ensuring perfect sound quality, high-quality audio, allowing you to experience audiophile level music

Product specifications

Product model: BLS-B21

Supported devices: Supports connection between two mobile phones

Bluetooth version: V5.2

Output interface: 3.5mm stereo RCA left and right channels

Function introduction: Supports Bluetooth, USB flash drive, hands-free calling, NFC connection

Bluetooth protocols: AVRCP, A2DP

Frequency range: 2400-2483.5MHz

Frequency response: 20Hz-20kHz

Output power: 28mW RL=162

Signal to noise ratio:>90dB

Total harmonic distortion: 0.1%

Support: SBC, AAC

Forward transmission distance: 10 meters

Support: Type-C interface 5V power supply

Product size: 78 * 50 * 18 (mm)

Bare metal weight: 31g

Instructions for use

Ⅰ.Connect via Bluetooth pairing

1. Firstly, connect the USB cable to a 5V power supply. Once connected to the product, you will see an "indicator window" with a blue indicator flashing and a sound indicating the NFC desktop

The Bluetooth audio receiver has successfully entered pairing mode.

2. Turn on the Bluetooth function of your phone or other device, search for a device with the name "BLS-B21", and click connect after successful search.

3. After clicking on the connection, the blue light in the "indicator window" flashes slowly and a prompt sound is heard, indicating that the device is successfully connected.

Note: Next time, simply press the power button for 3 seconds to automatically connect to the last used phone or other device.

Ⅱ.Through NFC pairing connection

1. Firstly, connect the USB power cord to a 5V power supply. When you see the blue indicator light flashing in the "indicator window" and hear a beep, it indicates that the NFC desktop Bluetooth audio receiver has successfully entered pairing standby mode.

2. Turn on the NFC function on your phone or other device.

3. Place the NFC sensing area of your phone at zero distance against the NFC sensing area of the N FC desktop Bluetooth audio receiver for about 2 seconds. When you see a dialog box on your phone, click on Connect. (If a dialog box pops up and a pairing code needs to be entered, enter "0000". If it does not pop up, please ignore it.)

4. The product only has a receiving function

5. The product is suitable for various old-fashioned audio systems, tablets, mobile phones, televisions, amplifiers, etc

Product List:

Bluetooth adapter * 1

3.5mm audio cable * 1

RCA audio cable * 1

Power cord * 1

Instruction manual * 1