-An IR (infrared) sensor is a device that is used to detect infrared radiation (IR) in the environment. IR radiation is a type of electromagnetic radiation that has a longer wavelength than visible light and is not visible to the human eye.
-IR sensors can be used in a wide range of applications such as obstacle detection, remote control, and temperature measurement. IR sensors work by detecting the IR radiation that is emitted or reflected by an object. They typically consist of an IR detector, which is sensitive to IR radiation, and an amplifier circuit that amplifies the small signals produced by the detector. The output of the IR sensor is then processed to determine the presence or absence of IR radiation.
-IR sensors can be connected to microcontrollers, and other devices to provide sensing capabilities to a wide range of applications. They can be powered by a DC voltage ranging from 3V to 5V and have a digital output that can be easily read by a microcontroller.

Features:

-3 mm screw holes easy fixed installation.
-VCC voltage is 3.3V to 5V converter (which can be directly connected to 5V single-chip microcontroller and 3.3V).
-circuit board size: 3.2CM*1.4CM" "IR (infrared) sensor is a device used to detect infrared radiation (IR) in the environment
IR radiation is a type of electromagnetic radiation that has a longer wavelength than visible light and is not visible to the human eye.
Can be used in a wide range of applications such as obstacle detection, remote control, and temperature measurement.
Consists of an IR detector and an amplifier circuit that amplifies the small signals produced by the detector.
Can be connected to microcontrollers, and other devices to provide sensing capabilities.
Powered by a DC voltage ranging from 3V to 5V and has a digital output that can be easily read by a microcontroller.
Features: 3 mm screw holes for easy fixed installation, VCC voltage is 3.3V to 5V converter, circuit board size: 3.2CM*1.4CM