Performance description: 1. Working Voltage: 3.3V or 5V 2. Operating Current: 3. Operating Temperature Range: -10 ° ~ + 70 ° 4. Interface Type: Analog output 5. Size: 30mm x 23mm 6. Size Weight: 5g 7. Pin definition:S signal output,+ Power supply (VCC),- ground (GND) The positive electrode of the piezoelectric ceramic sheet: 8.Input The negative electrode of the piezoelectric ceramic sheet: 9.Gnd S-port to an analog input pin of the controller. 5V and GND are connected to + 5V and GND power supply.Connect the positive and negative piezoelectric ceramics when Input and Gnd purchase.