SW-420 Vibration Sensor Module for Arduino

The SW-420 Vibration Sensor Module for Arduino is a widely used motion and shock detection sensor designed for various electronic projects. It helps detect physical vibration, shock, or movement and sends a signal to your microcontroller, making it an essential component for Arduino, ESP8266, ESP32, and Raspberry Pi users.

This compact sensor module features the SW-420 vibration switch and an LM393 comparator that provides clean digital output signals. It can detect small to large vibrations, allowing it to trigger alarms, record data, or activate relays.

With its dual outputs (analog and digital), it offers flexibility for a wide range of projects — from security systems and earthquake detectors to robotic impact sensors. The module is easy to connect and operate, requiring no complex circuitry, making it beginner-friendly yet reliable for professionals.

Features of SW-420 Vibration Sensor Module for Arduino

• Equipped with a high-sensitivity SW-420 vibration switch sensor.

• Detects shock, motion, or vibration with high precision.

• Dual output: Digital (DO) and Analog (AO) signals.

• Operates from 3.3V to 5V – compatible with Arduino and ESP boards.

• Adjustable sensitivity using onboard potentiometer.

• Built-in LM393 comparator ensures stable performance.

• Indicator LEDs for power and signal status.

• Compact, lightweight, and easy to integrate.

• Ideal for security, IoT, and automation projects.

The SW-420 module is perfect for makers, students, and engineers seeking an easy and affordable vibration detection solution.

Technical Specifications of SW-420 Vibration Sensor Module

• Operating Voltage: 3.3V – 5V DC

• Sensor Type: SW-420 vibration switch

• Comparator IC: LM393

• Output Type: Digital (DO) and Analog (AO)

• Adjustable Sensitivity: Yes (via potentiometer)

• Indicator: Power and output LEDs

• Dimensions: 33mm × 14mm

• Operating Temperature: -10°C to +70°C

• Interface: 3-pin (VCC, GND, DO/AO)

• Response Time: Fast and stable

Built for precision and reliability, this module is capable of detecting even subtle vibrations in real-time.

Applications of SW-420 Vibration Sensor Module for Arduino

The SW-420 Vibration Sensor Module is ideal for a wide range of applications:

• Anti-theft and motion alarm systems.

• Earthquake and vibration detection systems.

• Vehicle and door movement alarms.

• Industrial machine vibration monitoring.

• Smart automation and IoT projects.

• Robotics collision detection systems.

• Educational and research-based vibration analysis.

From school projects to professional automation setups, this module delivers dependable vibration sensing performance.

Working Principle of SW-420 Vibration Sensor Module for Arduino

The SW-420 sensor operates using a spring-based vibration switch. Inside the sensor, a small metal spring coil reacts to vibration or movement. When it shakes, the spring briefly contacts or disconnects from a fixed terminal, generating electrical pulses.

These pulses are then processed by the LM393 comparator circuit on the module. The comparator filters and converts the signal into a clear digital output.

When no vibration is detected, the output stays LOW. When a vibration occurs, the output pin sends a HIGH signal, and the output LED lights up. The potentiometer lets users adjust the sensitivity threshold, allowing you to decide how strong a vibration must be to trigger an output.

This simple working principle makes the SW-420 sensor both accurate and efficient for any microcontroller-based system.

Advantages of Using SW-420 Vibration Sensor Module

1. Plug-and-play operation with Arduino, ESP32, and Raspberry Pi.

2. Detects vibrations with high sensitivity and fast response.

3. Stable digital output using LM393 comparator.

4. Adjustable sensitivity for customized performance.

5. Compact and easy to mount on any board or case.

6. Suitable for low-power and battery-operated systems.

7. Works under various environmental conditions.

8. Provides both analog and digital outputs for flexibility.

9. Ideal for robotics, IoT, and home automation.

10. Affordable, durable, and quality-tested by Electroxbd.

This sensor module combines precision, reliability, and simplicity in one small package.

How to Use SW-420 Vibration Sensor Module with Arduino

1. Connect VCC to 5V on Arduino.

2. Connect GND to Arduino GND.

3. Connect DO to any digital pin (e.g., D2).

4. Upload a simple sketch to detect HIGH or LOW states.

When vibration is detected, the LED on the module lights up, and the Arduino receives a HIGH signal, which can trigger an alarm, record data, or activate a buzzer.

Example uses:

• Motion-triggered lights or alarms.

• Detecting impacts in robotics projects.

• Monitoring vibration intensity in machinery.

Maintenance and Handling Tips

• Handle the sensor gently to avoid false triggers.

• Keep it in a dry and dust-free environment.

• Avoid excessive bending or pulling on pins.

• Mount it securely to ensure accurate readings.

• Use proper power supply for stable operation.

Proper care ensures longer sensor life and consistent accuracy.

Why Buy SW-420 Vibration Sensor Module for Arduino from Electroxbd

At Electroxbd, quality and reliability are our top priorities. Each module is carefully tested before delivery to ensure excellent performance.

Reasons to choose Electroxbd:

• 100% authentic and quality-tested products.

• Affordable prices for students, hobbyists, and professionals.

• Fast delivery across Bangladesh from Rajshahi.

• Helpful customer support and after-sales service.

• Trusted by thousands of electronics enthusiasts nationwide.

Electroxbd – Trusted Source for Reliable Electronic Parts.

Buy SW-420 Vibration Sensor Module for Arduino in Bangladesh

Get your SW-420 Vibration Sensor Module for Arduino today from Electroxbd.com. Reliable vibration detection for DIY projects, automation systems, and robotics. Fast and secure nationwide delivery.

Office Address:
H#1/1, In Opposite of RH Chhatrabash, Madrasa More, Debisingpara, Boalia, Rajshahi

WhatsApp: 01600334238
Website: www.electroxbd.com
Tagline: Trusted Source for Reliable Electronic Parts

Common Questions:

Q: What is the price of SW-420 Vibration Sensor Module for Arduino in Bangladesh?

A: The latest price of SW-420 Vibration Sensor Module for Arduino in Bangladesh is 100 BDT.

Q: Where to buy SW-420 Vibration Sensor Module for Arduino in Bangladesh?

A: You can buy the SW-420 Vibration Sensor Module for Arduino at the best price from ElectroXBD in Bangladesh.