RC-5 protocol was developed by Philips in the late 1980s  and  it is still most widely  used.  A remote control is a component of an electronics device most commonly a television set  originally used for operating the device wirelessly from a short line-of-sight distance. Commonly, remote controls are Consumer IR devices used to issue commands from a distance to televisions. Remote controls for these devices are usually small wireless handheld objects with an array of buttons for adjusting various settings such as television channel, track number, and volume. Most of these remote controls communicate to their respective devices via infrared signals.