Which type of electromagnetic radiation is used to send signals from a tv remote control?

Answer 1

There are a number of different types of remote controls. As regards those used most around the home, we find that infrared light is the most commonly applied one. Infrared light is light just below the visible spectrum. TV's, DVD players and audio systems usually use this kind of device. They're very common, but there are other types of remote controls in common usage.

Remote controls for garage doors, gates and the like use radio waves in the 300 MHz to 400 MHz range. We also see radio waves on frequencies just above 70 MHz used for many remote control (RC) model aircraft and vehicles. Again we see radio waves used in most remote controls for Video Games. But these operate in the microwave band somewhere around 2.4 GHz, in case you wish to differentiate microwaves from "regular" or lower frequency radio waves.

Answer 2

A few remotes use radio frequencies. Garage door openers. Car entry. Most home system units and some car entry use infrared light. Still electromagnetic.

Answer 3

Radio

Microwaves

Optical

Infrared

Are all used in communications.

Answer 4

infra-red

Answer 5

Infrared