Ris forRemote control
A remote control is a device that makes other devices work without having to get up and press the buttons on them. You can change the channel on your television with a remote control. Remote controls work by sending a signal in a beam of invisible light to the device they control. The device has a sensor on it so it can 'see' that light. This is why remote controls work best when there is nothing in between the remote control and the thing you are trying to control.