A
Anonymous
Apr 06, 2026
Rating: 5/5
Reliable Sensor
Using it for a collision detection prototype. No issues so far. Response time is instant.
Description
Vibration switch SW-420 normally closed vibration sensor module, vibration switch, alarm induction module
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital Switch Output (TTL) |
| Interface | 3-Pin Header (VCC, GND, DO) |
| PCB Dimensions | 32mm x 14mm |
| Mounting Hole Size | 3mm Diameter |
| Sensitivity | Adjustable via Onboard Potentiometer |
| Static Current | Approx 0.1mA |
| LED Indicator | Power and Output Status LEDs |
| Compatibility | Arduino, Raspberry Pi, STM32, ESP8266 |
| Package Contents | 1x SW-420 Module, 1x Pin Header Strip |
5 reviews
A
Anonymous
Mar 01, 2026
Rating: 4/5
Good but sensitive
Works well but needed to adjust the pot to stop false triggers from ambient noise. Once tuned, it is reliable.
A
Anonymous
Feb 27, 2026
Rating: 5/5
Perfect for Arduino Alarms
Works exactly as expected. Very sensitive to taps and vibrations. Easy to integrate into my security box project.
A
Anonymous
Feb 25, 2026
Rating: 5/5
Great Value
Bought five for various projects. All working well out of the box. The potentiometer makes tuning easy.
A
Anonymous
Feb 24, 2026
Rating: 5/5
Easy to Integrate
Plug and play with most microcontrollers. Clear pinout and works with standard digital read functions.
5 FAQ
Q: Do I need a specific library for Arduino?
A: No, it acts as a simple digital input. You can read the state using the standard digitalRead() function.
Q: Can I use this sensor outdoors?
A: The PCB itself is not waterproof. You should place it inside a waterproof enclosure for outdoor applications.
Q: How do I adjust the sensitivity?
A: Use a small Phillips screwdriver to turn the onboard potentiometer. Clockwise usually increases sensitivity.
Q: Can this work with 3.3V logic levels?
A: Yes, it operates comfortably between 3.3V and 5V DC, making it suitable for both 3.3V and 5V microcontrollers.
Q: Is this module Normally Open or Normally Closed?
A: This specific listing is for the Normally Closed (NC) version. The output goes high when vibration is detected.
![[Corrosion-Resistant] DFRobot Capacitive Soil Moisture Sensor Module Dry/Wet Detection](https://www.gosteppe.com/cache/medium/product/3259/legacy-main-2f0d3454b36b32391d263648.webp)
![[All-Inclusive Flat Rate] Single Imported Dental Implant | Includes Free Cleaning, Abutment, Fixture, and Crown](https://www.gosteppe.com/cache/small/product/268875/legacy-main-9f3e40fd1d280ff9fe710fa3.webp)
![[Dental Implant Chief Specialist] Implant Examination and Treatment Planning](https://www.gosteppe.com/cache/small/product/268856/legacy-main-c23225af0fb2c31bbd4f46a1.png)
