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one
Rf products are relatively cheap, but not common, as far as the mouse is concerned, the sensitivity is higher than ordinary Bluetooth products, infrared is also a wireless transmission standard, but because the distance is too short speed is too slow, used less and less.
two
Bluetooth has a 2.4G frequency point, but there are other frequencies, the frequency range is wider than the 2.4GHZ radio frequency; The 2.4GHZ radio frequency belongs to the free ISM public frequency range, and the natural frequency range is relatively narrow.
three
Bluetooth technology is a short-range communication system, which is intended to replace cables to connect portable or fixed electronic devices, belongs to the IEEE standard. Bluetooth wireless technology has two forms: basic rate (BR) and low power (LE); 2.4GHz RF takes full advantage of its own protocols, which do not follow any IEEE standards, their code is small and optimized, and they are dedicated to applications with stringent power consumption and packet overhead requirements.