Passive Buzzer Module code

it can be used as a detector for security issue, adding in fridge inside when user forgot to close fridge door, the buzz sound will remind user.

int buzzer = 8; // set the buzzer control digital IO pin

void setup() {
	pinMode(buzzer, OUTPUT); // set pin 8 as output
}

void loop() {
	for (int i = 0; i < 80; i++) {  // make a sound
		digitalWrite(buzzer, HIGH); // send high signal to buzzer 
		delay(1); // delay 1ms
		digitalWrite(buzzer, LOW); // send low signal to buzzer
		delay(1);
	}
	delay(50);
	for (int j = 0; j < 100; j++) { //make another sound
		digitalWrite(buzzer, HIGH);
		delay(2); // delay 2ms
		digitalWrite(buzzer, LOW);
		delay(2);
	}
	delay(100);
}