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Bluetooth Low Energy: The Developer's Handbook: Heydon, Robin: 8601200960921: Amazon.com: Books
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Intro to Bluetooth Low Energy: The easiest way to learn BLE: 9781790198153: Afaneh, Mohammad: Books - Amazon.com
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UGREEN USB Bluetooth 4.0 Adapter Nano USB Wireless Dongle Plug and Play for Win 10 8 Support Win 7 Vista Laptop Desktop to Bluetooth Headphone Speaker Keyboard Mouse Game Controller
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Amazon.com: SABRENT USB Bluetooth 4.0 Micro Adapter for PC [v4.0 Class 2 with Low Energy Technology] (BT UB40) : Electronics
DSD TECH HM-10 Bluetooth 4.0 BLE iBeacon UART Module with 4PIN Base Board for Arduino UNO R3 Mega 2560 Nano
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Adafruit Bluefruit LE Sniffer - Bluetooth Low Energy (BLE 4.0) - nRF51822 - v2.0 [ADA2269]
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Amazon.com: Adafruit Bluefruit LE SPI Friend - Bluetooth Low Energy (BLE) : Electronics
Getting Started with Bluetooth Low Energy: Tools and Techniques for Low-Power Networking: Townsend, Kevin, Cufí, Carles, Akiba, Davidson, Robert: 9781491949511: Amazon.com: Books
