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 |
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