KY031 Knock Sensor Module


8 in stock

SKU: KY-031 Knock Sensor Category: Tags: , , , , , ,


The KY031 knock sensor module is ideal for adding detection of shocks and impacts to your project.

It can detect an event based on percussion (typical knock-knock knock type) to activate a function, controlling a relay etc.

The sensor has a very light spring locked at one end the opposite end is suspended over a large contact plate.

When an event occurs like a knock, the spring moves inside its transparent case hitting the plate.

This event can be detected by the microcontroller as a trigger event.


  • KY031 Knock Sensor
  • Working voltage : 5 VDC
  • Pin pitch : 2.54mm
  • Size : 30mm  x18mm x 6mm

Additional information