DUTTY Sensing Module, HC-SR501 Human Infrared Sensing Module, Pyroelectric In...
$11.55
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6pcs HC-SR501 High Sensitivity Human Infrared Sensing Module Pyroelectric Inf...
$14.86
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About this item
(Note: To increase the sensing angle, this module uses a circular lens, allowing detection from all four sides. However, the left and right sides of the sensor remain more sensitive than the top and bottom. ).
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