The vibration sensor is a digital input module, it senses the vibration from the environment, then transfers the vibration signal to the output module, it can be used as a vibrate switch.
You can use the vibration sensor to detect the vibration, they transfer the vibration signal to output modules, such as buzzer. When it detects vibration, the buzzer will alarm.
The vibration sensor detects a vibration from the environment. The interface of the vibration sensor is a digital interface, so it has two output states, logic high-level and logic low-level.
1. When the module is stable, it will output a logic low-level signal.
2. When the module senses the movement or vibration, it will output a logic high-level signal.
Tips
The vibration sensor itself has a micro-vibration after you vibrate it, please wait a moment before you use it again.