A
Anonymous
Apr 07, 2026
Rating: 5/5
Easy to Use
Clear instructions available online. The potentiometer works well for adjusting trigger levels.
Description
Normally Closed SW420 Vibration Sensor Module, alarm induction module, vibration switch SW-420.
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Model Number | SW-420 |
| Operating Voltage | 3.3V to 5V DC |
| Output Type | Digital TTL (0 and 1) |
| Comparator Chip | LM393 |
| Sensitivity Control | Adjustable Potentiometer |
| PCB Dimensions | 32mm x 14mm |
| Mounting Hole Size | 3mm Diameter |
| Operating Temperature | -10°C to 70°C |
| Current Consumption | Approx 30mA |
| Package Includes | 1 x SW-420 Sensor Module |
5 reviews
A
Anonymous
Mar 11, 2026
Rating: 4/5
Good Value
Works as described but needs careful calibration to avoid false triggers from minor noise.
A
Anonymous
Feb 28, 2026
Rating: 5/5
Reliable Sensor
Using it for a vibration alert system in my workshop. No issues so far after a week of use.
A
Anonymous
Feb 14, 2026
Rating: 5/5
Great for DIY Alarms
Works perfectly with my Arduino setup. Very sensitive and easy to calibrate using the potentiometer.
A
Anonymous
Jan 30, 2026
Rating: 5/5
Fast Shipping
Component arrived well packaged and functional. Tested immediately upon arrival.
5 FAQ
Q: What is the maximum detection range?
A: Detection depends on the vibration source intensity and sensitivity settings, typically effective for direct contact vibrations.
Q: Does it output analog or digital signals?
A: This module provides a digital TTL output, signaling high or low based on vibration detection.
Q: Is this compatible with 5V Arduino boards?
A: Yes, this module operates comfortably between 3.3V and 5V DC, making it ideal for Arduino.
Q: Can this detect sound waves?
A: No, this sensor is designed for physical vibrations and shocks, not audio sound waves.
Q: How do I adjust the sensitivity?
A: You can adjust the sensitivity by turning the blue potentiometer located on the PCB.
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