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Hlk-b40 Module Master-slave Wifi Bluetooth-compatible Ble 5.1 Wireless Serial Port Transparent Transmission Development Board - Integrated Circuits - AliExpress
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Bluetooth 5.0 USB Adapter, Bluetooth USB Dongle Stick, Bluetooth Receiver and Transmitter for Desktop, Laptop, Printer,
GitHub - wwin3286tw/Python-Bluetooth-Serial-Port-For-Linux: Can communication With Bluetooth Device(PC、RaspberryPI) using Android or support SPP device.
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