This is a Passive Buzzer Module For Arduino Drive With Du Pont line works on 3.3v to 5v with fixed bolt hole for easy installation, you dont need oscillation source, you have a square wave at frequency 2k to 5k to drive the sound frequency.SpecificationWorking Voltage: 3.3-5VPCB Dimension:

This is a Passive Buzzer Module For Arduino Drive With Du Pont line works on 3.3v to 5v with fixed bolt hole for easy installation, you dont need oscillation source, you have a square wave at frequency 2k to 5k to drive the sound frequency.SpecificationWorking Voltage: 3.3-5VPCB Dimension: 3.3cmx1.3cmModule: Adopts 9012 transistor drive