Normal remote controls use either infrared rays or Raw RF signals to control devices. But a bluetooth remote control uses bluetooth technology to control devices. Bluetooth technology is essentially RF, but the difference comes from the fact that there are many layers in bluetooth that are above the RF layer.
Bluetooth is a very good technology to replace existing remote control technologies because bluetooth was specifically designed with the aim to replace short range wired communication. Bluetooth works on 2.4GHz frequency range. This is same as the frequency range for Wifi. There are many advantages of using bluetooth. Since its a radio frequency communication there are no line of sight limitations. Bluetooth has got the capability to find all the bluetooth devices in its range and communicate with them. The pairing ability of bluetooth ensures that the signals for a particular receiver are not mistaken for another one.
The importance of bluetooth is realised from the fact that almost every new handheld device is bluetooth enabled. This enables us to writes applications for these handhelds to act as remotes for our receivers. Your mobile phone can act as as remote for a bluetooth receiver. Mobiles phone can be programmed to wirelessly control a computer by using bluetooth. Bluetooth provides encryption to prevent unauthorized use of the receiver.
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