The J.LUMI YCA1050 PIR Motion sensor uses a passive infrared technology to detect body heat or infrared energy. The motion sensor monitors the presence of a moving, high heat source that shouldn’t be present in the area, and triggers the connected lighting equipment or electronic devices.
https://www.amazon.com/J-LUMI-YCA1050-Motion-Ceiling-85-265V/dp/B077Z88M8Y

