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002 Fresnel PIR Sensor Lens with 10m distance 120 degree Dia100mm
002 Fresnel PIR Sensor Lens with 10m distance 120 degree Dia100mm 002 Fresnel PIR Sensor Lens with 10m distance 120 degree Dia100mm
002 Fresnel PIR Sensor Lens with 10m distance 120 degree Dia100mm 002 Fresnel PIR Sensor Lens with 10m distance 120 degree Dia100mm

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002 Fresnel PIR Sensor Lens with 10m distance 120 degree Dia100mm

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Fresnel PIR lens has two functions:
1. It is the focusing effect, that is, the pyrolysis infrared signal is refracted (reflected) on the PIR.
2. The detection area is divided into a number of bright areas and dark areas, so that the moving object entering the detection area can generate a modified pyroelectric infrared signal on the PIR in the form of temperature change.
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