These sensors use infrared, radar, and sound waves to detect changes that mean someone or something is in the space. Use cases: If someone passes into the hallway, turn on a light.

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

If your phone does not have an IR blaster, you can still use an external IR blaster device: Connect the External IR Blaster: Connect the external IR blaster to your phone via a USB cable or Bluetooth.

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

Vishay’s VEML6046X00 RGB IR sensor is AEC-Q100 qualified for use in vehicle displays and interior lighting.