KY-031 B24 Knock Sensor Module Switch for Arduino Raspberry Pi

SKU: 1941869

0.82 0.82 Piece 0.8200000000000001 USD

¥ 6.00

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Product description:

  • This module is ideally suited to adding knock sensing to your project. This is a knock detection module which can detect a percussion based event to trigger a switch like response. This allows you to replace those mechanical switches that have been holding back your project all this time with something a little more violent.

  • The sensor itself has a light spring that is held from one end. The opposite end is suspended above a large contact plate. When a knock event occurs the spring moves within its casing and hits the plate. This completes the circuit allowing a small amount of current to pass. This can then be picked up by a microcontroller as a trigger event.


  • Length: 19mm

  • Width: 15mm

  • Height: 10mm

  • Main Colour: Black

  • Country of Manufacture: China

  • UPC: Does Not Apply

  • Minimum Operating Temperature: -40°C

  • Maximum Operating Temperature: 85°C

  • Pin Pitch: 2.54mm

  • Mounting Hole Size: M2

  • Mounting Dimensions: 11mm

  • Noted Onboard Components: Captive spring

  • Sensor Property: Vibration