Price: $3.00

The Crowtail-knock sensor is a piezoelectric sensor that contains a piezoelectric sensing crystal and a resister. This crystal creates a small amount of voltage when shaken and takes advantage of this unique property. It will output a pulse when vibration is detected.


  • Digital Crowtail connector
  • Presence sensing: vibration
  • Sensor: KY-031
  • Power supply: 5V
  • Size: 20mm x 20mm

Package list

  • Crowtail-knock sensor x 1

Wiki & External links