3.3-5V Passive Buzzer Module

Description : 3.3-5V Passive Buzzer Module For Arduino 9012 Drive With Du Pont line Work Voltage: 3.3-5V With fixed bolt hole for easy installation PCB Dimension: 3.3cmx1.3cmDu Pont line length: 21cm Module adopts 9012 transistor drive Feature: 1.No oscillation source, need square wave (frequency 2K-5K ) to drive. 2.Sound frequency control, you can make a "do re mi fa sol la si" effect. Pin Definitions : VCC : 3.3V-5V GND : The Ground I/O : I/O Interface of SCM