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small-size module
an RF receiver
safe to use
Document scanning
black/dark or transparent surfaces may be poorly detected
Vibration Sensor Module Raspberry Pi & Accessories small-size moduleVibration Sensor Module Vibration sensor module alarm Motion sensor module vibration switch SW 420 module based on the vibration sensor SW 420 and Comparator LM393 to detect if there is any vibration that beyond the threshold. The threshold can adjust using an onboard potentiometer. When this no vibration, this module output logic LOW the signal indicates LED light, and vice versa. If the module does not vibrate, the vibration switch was closed on
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