Infrared signals are a type of electromagnetic radiation that falls between visible light and microwaves on the electromagnetic spectrum. They have longer wavelengths than visible light, making them invisible to the human eye. Infrared signals are commonly used in various technologies, such as remote controls for televisions and other devices, where they transmit information by sending pulses of infrared light. These signals can also be utilized in communication systems, thermal imaging, and night vision equipment. In addition, infrared sensors detect heat emitted by objects, allowing for applications in security systems and environmental monitoring. Overall, infrared signals play a crucial role in modern technology.