🔍 Product Overview

View the product working -The SW-420 vibration sensor module uses a “normally closed” vibration switch and an LM393 comparator circuit. When the module is still, the switch remains closed and the output stays LOW. Upon vibration or shock, the switch opens briefly, the comparator activates, and the output goes HIGH — allowing accurate detection of vibration or movement.

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🚀 Why It’s Ideal for Your Projects

• Instant vibration detection — Detects shocks or vibrations easily, ideal for alarms, motion detection, or impact sensing.

• Simple integration — Works with 3.3 V–5 V logic, providing a clean digital output that interfaces directly with microcontrollers.

• Adjustable sensitivity — Often includes a trim potentiometer to fine-tune the vibration threshold for your application.

• Compact and mounting-ready — Small module size with pre-drilled holes for easy installation in enclosures or prototypes.

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📝 Key Features

• Operating voltage: 3.3 V to 5 V DC

• Output: Digital switching (LOW when stable, HIGH on vibration)

• Driving ability: > 15 mA (suitable for MCU inputs or relay triggers)

• Module size: ~40 × 15 × 7 mm

• Includes mounting holes for secure placement

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🎯 Typical Applications

• Security and alarm systems — Detects impact, tampering, or movement of doors, windows, or vehicles.

• Industrial monitoring — Monitors excessive vibration in motors, pumps, or rotating machinery.

• DIY and IoT projects — Adds vibration or shock sensing to Arduino, ESP32, or Raspberry Pi projects.

• Wearables and portable devices — Ideal for interactive or motion-sensitive gadgets.

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✅ Why You’ll Love It

The SW-420 module offers a low-cost, reliable, and compact solution for detecting vibrations and shocks. With its digital output and simple wiring, it’s a favorite among hobbyists, engineers, and educators looking to add motion-sensing capability without complex hardware.