Vibration Sensor Module SW 420

Vibration Sensor Module SW 420 

The SW-420 Vibration Sensor Module is a simple and reliable vibration detection module used to sense sudden movements, vibrations, shocks, or impacts. It is built around the SW-420 spring-type vibration switch, along with a comparator IC (commonly LM393) that converts vibration signals into clean digital outputs.
When vibration exceeds a preset threshold (adjustable via onboard potentiometer), the module outputs a HIGH signal and activates the onboard indicator LED, making it suitable for security and motion detection systems.

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Note :-

• Do not reverse the power directions, otherwise, it is possible to burn the chip.
• Signal LED light is output Low, signal LED OFF output is High.
• The output level close to the input voltage.

Features :-

• Using SW-420 normally closed type vibration sensor.
• Comparator output, clean signal, good waveform, strong driving ability, >15mA.
• Using a wide voltage LM393 comparator.
• With bolt holes for easy installation.
• Operating Voltage (VDC)- 3.3 ~ 5

Applications

• Vibration/Impact detection in security systems
• Anti-theft alarms for vehicles, doors, windows
• Smart home appliances vibration monitoring
• Industrial equipment vibration sensing
• Earthquake/structural vibration experiments (basic)
• Automatic wake-up systems for machinery
• Tilt or knock detection in robotics and DIY projects