Content in High Quality Passive Buzzer Module

What is the Operating voltage of High Quality Passive Buzzer Module?
It's 5V DC, you can use the power source from Arduino/gizDuino.
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High Quality Passive Buzzer Module

This high quality passive buzzer module has no oscillation source, it needs a square wave frequency 2kHz to 5kHz to drive. Compatible with all gizDuino and Arduino Boards.