Buzzer module

Product details:

There are 3 connection pin: VCC, GND and I / O. I / O pin is connected to the microcontroller or rectangular signal source to generate sound.
Contains a resistance in the transistor base, so it can be directly connected to the microcontroller.

Specification:

Working voltage: 3.3V - 5V;
Current: 30mA (MAX);

Package included:

1 x Buzzer module