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Bluetooth: Bluetooth is a wireless technology standard used for exchanging data between fixed and mobile devices over short distances using short-wavelength 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 profiles: In order to use Bluetooth, a device must be compatible with the subset of Bluetooth profiles necessary to use the desired services. A Bluetooth profile is a specification regarding an aspect of Bluetooth-based wireless communication between devices.