int buzzerPin = 3;                           	//Declares the value of buzzerPin to be 7
 
void setup()
{
pinMode(buzzerPin, OUTPUT);       	// Initialise the buzzerPin as an output.
}

void loop()
{
// Play a tone with the buzzer. frequency 600, duration 30ms then delay 150ms.
tone(buzzerPin, 600, 30); 
delay(150);
}