Vibration Sensor Module SW-420

The SW-420 Vibration Sensor Module is a highly sensitive motion and vibration detection module designed for a wide range of security and automation applications. This sensor uses a spring-type conductive probe that responds to physical vibrations, shocks, and movements, making it perfect for anti-theft systems, earthquake detection, vehicle alarm systems, and intelligent robotics projects.

Featuring an onboard comparator chip (LM393), the module provides both digital and analog outputs for flexible integration with microcontrollers like Arduino, Raspberry Pi, and PIC. The sensitivity can be easily adjusted using the onboard potentiometer, allowing you to fine-tune the detection threshold according to your specific application requirements.

This compact module includes LED indicators for power and vibration detection status, making debugging and setup straightforward. The SW-420 operates on a low voltage supply and consumes minimal power, making it ideal for battery-powered projects. Whether you’re building a door knock detector, vehicle security system, smart furniture, or seismic activity monitor, this reliable sensor module delivers consistent performance in detecting mechanical vibrations and physical shocks with excellent accuracy.

Specification :

• Operating Voltage: 3.3V – 5V DC
• Sensor Type: Spring-type vibration switch
• Output Type: Digital
• Digital Output: TTL level (High/Low)
• Comparator Chip: LM393
• Sensitivity: Adjustable via potentiometer
• Module Dimensions: 32mm × 14mm
• Mounting Holes: 2.5mm diameter
• Operating Current: 15mA (typical)
• LED Indicators: Power LED and Signal LED
• Output Interface: 3-pin header (VCC, GND, DO)
• Operating Temperature: -10°C to +50°C
• Detection Method: Mechanical vibration/shock
• Response Time: <10ms