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HALJIA 5PCS SW-420 Normally Closed Type Vibration Sensor Module Alarm Sensor Module Vibration Switch Module Motion Sensor Module Compatible with Arduino Raspberry Pi

Regular price $5.99

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Module features:

1. Using SW-420 normally closed type vibration sensor.
2. Comparator output- clean signal- good waveform- strong driving ability- >15mA.
3. Working voltage: 3.3V ~ 5V.
4. Output format: digital switching output (0 and 1).
5. With bolt holes for easy installation.
6. Small board, PCB dimensions: 3.2 x 1.4 cm.
7. Using a wide voltage LM393 comparator.
8. Used for triggering various vibrations, alarm for theft, smart car, earthquake alarm, motorcycle alarm, etc.
9. Compared with the normally open vibration sensor module, this module has a longer vibration triggering time and can drive the relay module.

If the module does not vibrate- the vibration switch was closed on state- output of low output- the green indicator light.
The product vibrates- vibration switch momentary disconnect- output is driven high- the green light does not shine.
The output can be directly connected with the microcontroller- which to detect high and low level- so as to detect whether the environment exist vibration- play a role in the alarm.

http://download.haljia.com/download/Sensor/Vibration Sensor Module/Vibration Sensor Module.pdf 

Package Inculded: 
5 x vibration sensor module