We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Is an IR Light Switch?

By Maggie J. Hall
Updated May 16, 2024
Our promise to you
EasyTechJunkie is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At EasyTechJunkie, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

An infrared (IR) light switch detects or receives infrared signals and responds with a programmed action. An IR motion sensor might respond by turning on a light after detecting motion by receiving infrared signals from people, living things, or any objects producing heat. IR sensors might also perform a task when triggered by a beam of infrared light aimed directly toward the sensor by a light emitting diode (LED). The IR light switch operates indoors or out to turn on lights, fans, or other electrical devices.

The shortest wavelength of invisible light contains the infrared spectrum. As the atoms in matter move constantly, they emit energy or photons, and some of this energy lies within the infrared spectrum. Sensors in an IR light switch detect this energy and translate the signal into electric current, causing a light to turn on. Some IR technology, a television remote control for example, requires signals transmitted from a beam of infrared light. When a button on the remote is depressed, current travels to and illuminates the LED, producing the infrared light beam.

When used for outdoor safety or security, the light producing device generally contains the IR light switch. Depending on the IR technology, lights may turn on and off automatically at dusk when sensors no longer receive heat signals from sunlight. Other appliances might require the infrared heat emitted by people or other living things before responding by turning on lights. These devices also contain timers that continue illumination for a specified period of time after an initial response is triggered.

Consumers may purchase relatively inexpensive motion detecting IR light switches for indoor use. The light switch usually screws into the light bulb socket and a light bulb screws into the outer end of the device. When people enter the room, the sensor detects the infrared signals and turns the light on. The drawbacks of this type of apparatus include the fact that the sensor cannot be covered with a lampshade or otherwise be obstructed.

Another type of IR light switch requires attaching the device to a live wire of a room wall switch or socket. The device appears as any other light switch or socket plate, but contains an IR sensor. Using the IR beam transmitted by a remote control device, consumers turn the lights, fans or other room appliances on and off. The more complex versions allow codes to be programmed into the remote to turn lights off after 15 minutes or even up to two hours later.

EasyTechJunkie is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Link to Sources
Discussion Comments
EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.

EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.