KY-012 Active Buzzer

Specifications:

Voltage: 5V
Color: Black + silver gray
Package dimension: 77x42x13mm
Weight: 5g

contoh program dengan arduino :

int speakerPin = 8;
void setup () {
pinMode (speakerPin, OUTPUT);
}
void loop () {
analogWrite (speakerPin, 255);
delay (50);
analogWrite (speakerPin, 0);
delay (10);
}