Knock Sensor Module with LED

What it is: A vibration and impact detection module featuring a tiny mechanical spring-switch element that momentarily closes its contact circuit when hit, bumped, or knocked.

Key Specs:

• Operating Voltage: 3.3V to 5V DC.

• Output: Digital signal (TTL HIGH/LOW trigger upon impact).

Key Features: Includes an onboard status LED that lights up instantly when a knock or vibration is detected, making hardware debugging simple without code.

Common Uses: Knock-to-unlock systems, theft/vibration alarms, impact counters, and interactive surface triggers in Arduino, ESP32, and Raspberry Pi projects.