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|