SW-420 Vibration Sensor Module

The SW-420 Vibration Sensor Module is a compact and reliable sensor designed to detect vibrations, shocks, and sudden movements. It is widely used in security systems, automation projects, and DIY electronics. When vibration exceeds a preset threshold, the sensor outputs a digital signal, making it easy to interface with microcontrollers such as Arduino, Raspberry Pi, ESP8266, and ESP32.

The module features an onboard LM393 comparator and an adjustable sensitivity potentiometer, allowing users to fine-tune vibration detection according to their application needs. Its low power consumption and simple 3-pin interface make it ideal for beginners and professionals alike.

Key Features

• Detects vibration, shock, and movement

• Digital HIGH/LOW output signal

• Adjustable sensitivity using onboard potentiometer

• Operates on 3.3V – 5V DC

• Onboard LM393 comparator for stable performance

• Power and output indicator LEDs

• Compact size and easy mounting

• Simple 3-pin interface (VCC, GND, DO)

• Compatible with most microcontrollers

Technical Specifications

• Operating Voltage: 3.3V – 5V DC

• Output Type: Digital (High / Low)

• Sensitivity Adjustment: Yes (Potentiometer)

• Comparator IC: LM393

• Interface Pins: VCC, GND, DO

• Current Consumption: Low power

• Module Size: Compact PCB design

Applications

• Anti-theft and security alarm systems

• Door, window, and glass break detection

• Vehicle and bike vibration alarms

• Industrial equipment vibration monitoring

• Robotics and automation projects

• DIY electronics and educational projects

• Smart home vibration-based triggers

Compatibility

• Arduino (Uno, Nano, Mega, etc.)

• Raspberry Pi

• ESP8266 / ESP32

• PIC, AVR, ARM microcontrollers

 Package Includes

• 1 × SW-420 Vibration Sensor Module