Analog Piezoelectricity Ceramic Piezo Vibration Sensor For ArduinoThis Analog Piezoelectric Ceramic Vibration Module buffers a piezoelectric transducer that responds to strain changes by generating a measurable output voltage change which is proportional with the strength of vibration also known as 'piezoelectric effect'. So you can know the extent of vibration. Different from digital vibration sensor that only accounts times, this analog one can tell extent of vibration.When the piezoelectric ceramic shocking will generate an electrical signal, Arduino Controller analog port can be perceived slight vibration signals, Also can be realized with vibration interactions related works, such as electronic drums.Pin definition: S: output signal from the sensor (connected to arduino analog input)+: Voltage supply (VCC = 3.3 - 5) -: Ground (GND)Specification:Working Voltage: 3.3V or 5VWorking Current: <1mAOperating Temperature Range: -10 ~ + 70Interface Type: Analog OutputItem Size: 30mm x 23mmGPIO: S; signal output, +; power supply (VCC), -; ground (GND)Input: Positive electrode of the piezoelectric ceramicGND: Negative electrode of the piezoelectric ceramicPackage included:1pcs Ceramic Piezo Vibration Sensor