Bluethooth
Bluetooth is a wireless technology that allows devices to communicate with each other and exchange data without having to connect via a cable. Bluetooth is designed to provide an easy and reliable way to wirelessly transfer data between devices such as smartphones, tablets, laptops, headsets, speakers, and other devices.
Bluetooth operates in the 2.4 GHz frequency band and uses a technology called Frequency Hopping Spread Spectrum (FHSS), which allows it to minimize interference with other radios and devices. The connection between Bluetooth devices is typically limited to a range of about 10 meters, but can be extended by using amplifiers or repeaters.
Bluetooth enables a wide range of applications, including wireless audio, hands-free cell phone, wireless file transfer, wireless keyboards and mice, wireless remote controls, and more. With the introduction of Bluetooth Low Energy (BLE), even very low-power devices such as wearables and sensors can communicate with each other.