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LM931-0552, Bluetooth Smart Module 4.1 BLE with IC Antenna
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Amazon.com: Plugable USB Bluetooth 4.0 Low Energy Micro Adapter (Compatible with Windows 10, 8.1, 8, 7, Classic Bluetooth, Gamepad, and Stereo Headset Compatible) : Electronics
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Bluetooth Module Of Ble Bluetooth Adapter 4.0 4.1 4.2 Ble Serial At Instruction Transceiver Operation - Integrated Circuits - AliExpress
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Amazon.com: Plugable USB Bluetooth 4.0 Low Energy Micro Adapter (Compatible with Windows 10, 8.1, 8, 7, Classic Bluetooth, Gamepad, and Stereo Headset Compatible) : Electronics
