Most remote controls send signals using infrared radiation (which is a kind of invisible red light that hot objects give off and halogen hobs use to cook with), though some use radio waves instead.

Do remote controls use electromagnetic radiation?

Remote controls work through sending electro magnetic waves through the air that the TV can pick up. The control sends out infrared waves which is a type of electromagnetic radiation, which includes radio, gamma, and micro waves, as well as all visible light.

Is remote infrared harmful?

Infrared radiation is always being absorbed and emitted by every object on Earth; it's a natural process and doesn't cause any harm.