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Vibration/Shock Sensor Module (SW420)

SKU: 9JU1YQFS5U
★★★★ ★ ★
4.5 (54 reviews)
The SW420 Vibration/Shock Sensor Module is a compact and highly sensitive vibration detection module designed to detect shocks, impacts, vibrations, and movement. The module is built around the SW-420 vibration switch and an onboard LM393 voltage comparator, which converts the vibration signal into a stable digital output for easy interfacing with microcontrollers. An onboard potentiometer allows users to adjust the...
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The SW420 Vibration/Shock Sensor Module is a compact and highly sensitive vibration detection module designed to detect shocks, impacts, vibrations, and movement. The module is built around the SW-420 vibration switch and an onboard LM393 voltage comparator, which converts the vibration signal into a stable digital output for easy interfacing with microcontrollers. An onboard potentiometer allows users to adjust the vibration sensitivity according to the application.

Operating from 3.3V to 5V DC, the SW420 module is compatible with Arduino, ESP32, STM32, Raspberry Pi, PIC, AVR, and other development boards. It provides a simple digital output that changes state when the vibration level exceeds the preset threshold. Due to its fast response, compact size, and low power consumption, the module is widely used in anti-theft systems, machine condition monitoring, earthquake detection, smart vehicles, industrial automation, and DIY electronics projects.

Key Features

  • Based on the SW-420 vibration sensor switch
  • Built-in LM393 voltage comparator
  • Detects vibration, shock, impact, and movement
  • Adjustable sensitivity using onboard potentiometer
  • Digital TTL output
  • Fast response time
  • High sensitivity and reliable performance
  • Power and output indicator LEDs
  • Operates from 3.3V to 5V DC
  • Compact PCB with mounting holes
  • Low power consumption
  • Easy interfacing with Arduino, ESP32, STM32, Raspberry Pi, AVR, PIC, and others.
  • Simple 3-pin interface
  • Ideal for security, automation, and industrial monitoring applications

Shipping & Returns

Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Module Type: Vibration/Shock Sensor Module
Sensor Model: SW-420
Comparator IC: LM393
Detection Method: Mechanical Vibration Switch
Operating Voltage: 3.3V to 5V DC
Operating Current: Approximately 15mA
Output Type: Digital (DO)
Output Logic: TTL Compatible
Sensitivity Adjustment: Onboard 10K Potentiometer
Default Sensor State: Normally Closed (NC)
Response Time: Fast
Status Indicators: Power LED and Output LED
Detection: Vibration, Shock, Impact, Motion
Operating Temperature: -20°C to +70°C
Storage Temperature: -40°C to +85°C
Module Dimensions: Approximately 32mm × 14mm
Mounting Type: PCB Module with Mounting Holes
Compatibility: Arduino UNO, Nano, Mega, ESP32, STM32, Raspberry Pi, PIC, AVR, 8051 and other digital microcontrollers

Additional Resources

SW420.PDF

FAQ

1. What is the SW420 Vibration/Shock Sensor Module used for?

The SW420 module is used to detect vibration, shock, impact, or movement in applications such as anti-theft alarms, machinery monitoring, earthquake detection, robotics, industrial automation, and smart security systems.

2. Can the sensitivity of the SW420 sensor be adjusted?

Yes. The module includes an onboard potentiometer that allows the vibration detection threshold to be adjusted according to the application's sensitivity requirements.

3. Is the SW420 module compatible with Arduino and ESP32?

Yes. The sensor operates from 3.3V to 5V and provides a TTL-compatible digital output, making it compatible with Arduino, ESP32, STM32, Raspberry Pi, AVR, PIC, and many other microcontrollers.

4. How does the SW420 vibration sensor work?

The module uses a mechanical vibration switch that changes its electrical state when exposed to vibration or shock. The onboard LM393 comparator compares the signal against the preset threshold and outputs a digital HIGH or LOW accordingly.

5. Does the SW420 module provide analog output?

No. The standard SW420 module provides only a digital output (DO). While some third-party variants include an analog output, it is not part of the standard SW420 module design.