XY-T220H Dual Channel Stereo TPA3251 Bluetooth 5.2 Digital Stereo
Audio Power Amplifier Board 220Wx2 With Shell Audio De

Bluetooth - A short range wireless mainly used for connecting to mobile phones

Digital - A system that uses only 0s and 1s to transmit data

Audio - Also known as sound. An audible vibration wave which can be heard.

Shell - A hard external structure or surface.

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