ALLNET 4duino Vibration Sensor SW-420 Module with LM393 Comparator for Arduino & Raspberry Pi

With a current consumption of under 10 mA and a wide operating voltage range from 3.3V to 5V DC, the ALLNET 4duino Vibration Sensor delivers reliable digital motion detection for Arduino, Raspberry Pi, and other microcontroller platforms. Built around the SW-420 vibration element and an LM393 comparator, this module converts physical vibration, shock, or tilt into a clean HIGH/LOW signal that any GPIO can read directly.

Overview

The 4duino_B39 is a compact vibration sensor module designed for easy interfacing. It features a 3-pin header (VCC, GND, DOUT) and provides a digital output that can be connected directly to a microcontroller input. An onboard potentiometer allows fine-tuning of the trigger sensitivity, while two LEDs indicate power and output status for quick diagnostics. Two mounting holes enable secure installation in enclosures or on prototyping boards.

What stands out

• SW-420 vibration sensing element with wide detection range
• LM393 comparator ensures stable digital output
• Adjustable sensitivity via onboard potentiometer
• Dual LED indicators for power and output
• Low current consumption under 10 mA
• Two mounting holes for secure installation
• Wide operating temperature range from -10°C to +50°C

Technical details

• Sensor type: SW-420 vibration sensor
• Operating voltage: 3.3V - 5V DC
• Output type: Digital (HIGH/LOW)
• Comparator chip: LM393
• Sensitivity: Adjustable via potentiometer
• Output indicator: Yes (LED)
• Power indicator: Yes (LED)
• Interface: 3-pin header (VCC, GND, DOUT)
• Detection method: Vibration, Shock, Tilt
• Compatibility: Arduino, Raspberry Pi, Microcontrollers
• Mounting holes: Yes (2x)
• Current consumption: < 10 mA (typical)
• Operating temperature: -10°C to +50°C
• Trigger threshold: Adjustable

Our verdict

The ALLNET 4duino Vibration Sensor is a dependable choice for projects needing simple, adjustable vibration detection. Its low power draw and broad voltage tolerance make it suitable for battery-powered and 5V systems alike, while the onboard LEDs and potentiometer simplify setup and troubleshooting. Whether for security alarms, impact logging, or interactive art, this module offers solid performance in a compact, mountable package.