WIKI: http://wiki.keyestudio.com/index.php/Ks0024_keyestudio_Knock_Sensor_Module

Video: http://www.keyestudio.com/wp/2016/05/ks0024-keyestudio-knock-sensor/

Introduction

This module is a knock sensor. When you knock it, it can send a momentary signal. We can combine it with Arduino to make some interesting experiment, e.g. electronic drum

Specification

Working voltage: 5V

Size: 30*20mm

Weight: 3g