What it measures: These use infrared sensors that measure light in the air, because this is inversely proportional to the amount of CO2. As such, these sensors can give a fairly accurate ...

Ear thermometers take a person's temperature using an infrared sensor. Learn more about their accuracy, how to use them, and alternative methods here.

Researchers have finally figured out how mosquitoes see humans in the dark: They detect infrared light the body generates via heat.

The blood oxygen sensor is composed of four LED clusters and four photodiodes integrated into the back of your watch case. The green, red, and infrared LEDs shine light onto the blood vessels in ...

How does the blood oxygen sensor work? The blood oxygen sensor is built into the back of the Apple Watch. It uses four clusters of red, green and infrared LED lights and four photodiodes, devices ...

How Infrared Images Could Be Part of Your Daily Life In a post-quarantine world, heat sensors could help spot sick people with elevated temperatures as they enter public places.

This article introduces the basics of ToF systems. Then it explores the applications for infrared sensors, including laser ...

Forehead thermometers use infrared sensors to pick up on infrared radiation that the body produces. Although infrared radiation is not visible, a person may be able to feel it as heat.

Apple HomePod and some Amazon Echo smart speakers come with temperature and humidity sensors built in—here's how to access them.