How does a remote control work the TV?

If the volume buttons on your Apple TV remote aren't working - Apple Support

How do infrared remotes work? - The Solid Signal Blog

Remote control - Wikipedia

How does a TV remote work? - Quora

Infrared vs. Radio Frequency: How Does a Remote Control Work?

The Evolution of Remote Control Mechanisms

What Is a Fire Stick and How Does It Work? - The Plug - HelloTech

I Took the TV Remote Control to Work instead of the Phone, by Grace Mary Power, Live Your Life On Purpose

Mapping the buttons on the remote control - The NUC Blog

Roku Remote Not Working? Fix It In 5 Simple Steps

Repair a TV Remote Control Button - iFixit Repair Guide

How the IR Remote Control Code Works