SW420 Vibration / Tilt Sensor

SW420 vibration and tilt sensor module for shock detection and anti-tamper applications. The SW420 is a motion-sensing module used in security alarms, smart appliances, and impact detection systems. It contains a small rolling roller or spring inside a metallic housing that breaks an electrical circuit when shaken or tilted. When the sensor is still, the circuit is closed and outputs a LOW signal. When it detects vibration or tilt, the internal contacts momentarily separate, causing the module to output a HIGH signal. It operates on 3.3V to 5V, features an onboard potentiometer to adjust the vibration sensitivity, and connects directly to any microcontroller digital pin to trigger immediate alerts.