Welcome to World of Module Sensor Kit repository
1.Introduction of module

The human body infrared sensor module, which works by detecting the infrared rays of about 10 um emitted by the human body. A Fresnel lens filter is attached to the surface to reduce the interference of the external environment on the detection.
Once a person enters the detection area, the infrared radiation of the human body is focused by a part of the mirror, and an alarm signal is generated after processing, and the pin outputs a high level, otherwise it outputs a low level.