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Bluetooth: Bluetooth is a wireless technology standard used for exchanging data between fixed and mobile devices over short distances using UHF radio waves in the industrial, scientific and medical radio bands, from 2.402 GHz to 2.480 GHz, and building personal area networks . It was originally conceived as a wireless alternative to RS-232 data cables.
Bluetooth Low Energy: Bluetooth Low Energy is a wireless personal area network technology designed and marketed by the Bluetooth Special Interest Group (Bluetooth SIG) aimed at novel applications in the healthcare, fitness, beacons, security, and home entertainment industries. It is independent of Bluetooth BR/EDR and has no compatibility, but BR/EDR and LE can coexist.
List of Bluetooth protocols: The wireless data exchange standard Bluetooth uses a variety of protocols. Core protocols are defined by the trade organization Bluetooth SIG. Additional protocols have been adopted from other standards bodies.
Bluetooth Special Interest Group: The Bluetooth Special Interest Group is the standards organization that oversees the development of Bluetooth standards and the licensing of the Bluetooth technologies and trademarks to manufacturers. The SIG is a not-for-profit, non-stock corporation founded in September 1998.