KY-031 Knock Sensor Module

The  KY-031 Knock Sensor module is a vibration sensor that sends a signal when a knock/tap is detected. Compatible with  Arduino, ESP8266,  ESP32, Teensy, Raspberry Pi, and other popular platforms.
This module consists of a spring-based sensor, a 10 kΩ resistor and 3 male header pins. The spring emits a high signal when a vibration is detected.

Operating Voltage    3.3V ~ 5V
Output Type    Digital