SAKATA 3D PLA 850 filament is...
This module features a highly sensitive vibration sensor and an on-board voltage comparator for producing a digital output signal.
Analog Piezoelectric Vibration Sensor
The Minisense 100 from Measurement Specialties is a low-cost cantilever-type vibration sensor loaded by a mass to offer high sensitivity at low frequencies.
Piezo Vibration Sensor - Small Vertical