Bluetooth

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Bluetooth

Short-range wireless technology standard which operates on the 2.4 MHz band. Bluetooth can be used for sending both data and audio, with popular uses including wireless headsets and cordless keyboards. Bluetooth devices can be set up with different hardware profiles to help perform specific tasks, for example audio adapter, audio headset, serial, and keyboard profiles.

Source:

http://www.aeris.com/iot-dictionary/

References:

https://en.wikipedia.org/wiki/Bluetooth

https://uk.wikipedia.org/wiki/Bluetooth