Normally Closed Vibration Sensor Module Alarm Sensor Module Vibration Switch SW-420

Applications:
Used for various vibration-triggered operations, such as burglar alarms, smart cars, earthquake alarms, motorcycle alarms, etc.
Compared with Normally Open vibration sensor modules, this module has a longer vibration trigger duration and can drive relay modules.

Module Features:

1. Uses the SW-420 normally closed vibration sensor manufactured by our company.
2. Comparator output provides a clean signal with good waveform and strong drive capability (exceeding 15mA).
3. Operating voltage: 3.3V - 5V.
4. Output form: Digital switch output (0 and 1).
5. Comes with fixing bolt holes for easy installation.
6. Small board PCB dimensions: 3.2cm x 1.4cm.
7. Uses a wide-voltage LM393 comparator.

Module Instructions:

1. When there is no vibration, the vibration switch remains in a closed/conductive state, the output pin sends a Low Level, and the green indicator LED is ON.
2. When vibration occurs, the vibration switch opens momentarily, the output pin sends a High Level, and the green indicator LED is OFF.
3. The output pin can be directly connected to a microcontroller. The microcontroller detects the high/low level to determine if there is vibration in the environment, enabling an alarm function.