Grove- Piezo Vibration Sensor is suitable for measurements of flexibility, vibration, impact, and touch. The module is based on PZT film sensor LDT0-028. When the sensor moves back and forth, a certain voltage will be created by the voltage comparator inside of it. Therefore, outputs high & low levels. In spite of the fact that it has a high receptivity for strong impacts, a wide dynamic range (0.001Hz~1000MHz) also guarantees excellent measuring performance. Finally, you can adjust its sensitivity by adjusting the potentiometer with a screw. Features: Standard grove socket Wide dynamic range：0.001Hz~1000MHz Adjustable sensitivity High receptivity for strong impact Applications: Vibration Sensing in Washing Machine Low Power Wake-up Switch Low-Cost Vibration Sensing Car Alarms Body Movement Security Systems Useful Links: Tutorial Project Links: Seat Monitor Grove Starter Kit For Arduino – Piezo Vibration Sensor Package Includes: 1 x Grove – Piezo Vibration Sensor SKU: PGI-00672602 Category: Vibration/Tilt Sensor