Knock sensor module – KY-031

KY-031 knock sensor module. 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 10 kΩ resistor and a spring-based sensor that sends a high signal when a vibration is detected.

Operating Voltage 3.3V to 5V
Output Type Digital