Remote controls use invisible light of frequency just below the visible range. This part of the electromagnetic spectrum is called?

Remote controls use invisible light of frequency just below the visible range. This part of the electromagnetic spectrum is called?
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IR Infra red rays We all almost use An IR remote controller to use operate a TV OR DTH OR any other electronics Gadgets in out home but ever you think how this process works means when you press any key in front of your TV then it react as per command given by you ….. Lets know how it happen ..in very simple words , no more technical depth.. A IR Remote Controller works in a line of sight “means the operating device must be placed in front of Remote controller” as a Transmitter (means will send signal from itself) and transmit an IR (Infrared) modulated (coded) signal (binary command codes in Electronics Engineering language) once any keys of the Remote controller pressed by you then a signal corresponding to pressed key will transmit and carrying a command which hit to the IR Receiv
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