Vibration Sensor Module SW-420

The SW-420 Vibration Sensor Module is a highly sensitive motion detection sensor that can detect vibration, sudden movement, or mechanical shocks. This module is ideal for use in DIY security systems, motion-activated alarms, vibration-sensitive projects, and equipment monitoring systems.

The module is based on the SW-420 vibration switch and includes a comparator circuit (LM393) that processes the output into a clean digital signal. When the module is at rest, the output remains low. If vibration or shock is detected, it triggers a high output signal, which can be easily read by a microcontroller like Arduino, ESP32, Raspberry Pi, or STM32.

A built-in sensitivity adjustment potentiometer allows you to fine-tune the detection threshold to suit your application. Additionally, the onboard status LED gives a clear visual indication when the sensor is triggered. The module operates on 3.3V to 5V DC and is ideal for both hobbyist and professional electronics projects.

Get your SW-420 Vibration Sensor Module now from eleberric.com, the trusted supplier of electronic components in Sri Lanka.

Specification

• Sensor Type: Vibration/tilt detection module

• Sensor Element: SW-420 vibration switch

• Comparator: LM393 dual voltage comparator

• Operating Voltage: 3.3V – 5V DC

• Output: Digital (High/Low)

• Interface Pins: VCC, GND, DO

• Sensitivity Adjustment: Yes (via onboard potentiometer)

• Output Indicator: LED (lights up on vibration)

• PCB Dimensions: Approx. 32mm × 14mm × 7mm

• Mounting Holes: Yes

• Weight: ~4g

• Response Time: Fast, real-time detection

Key Features

• Detects vibration, movement, and impact

• Digital output makes interfacing easy

• Adjustable sensitivity for precise tuning

• Onboard status LED for trigger indication

• Compatible with 3.3V and 5V systems

• Plug-and-play with Arduino and other microcontrollers

• Compact and lightweight module

• Ideal for security and motion-based automation

Applications

• Vibration-based security and intrusion alarms

• Knock detection on doors or surfaces

• Earthquake or tremor sensors

• Anti-theft alarms for vehicles or lockers

• DIY home automation systems

• Motion-sensing toys and smart objects

• Condition monitoring for machinery