const int pinApi = 8;
const int pinAlarm = 9;
int data;
void setup()
{ 
 pinMode(pinApi, INPUT); 
  pinMode(pinAlarm, OUTPUT); 
}
void loop()
{
  data = digitalRead(pinApi);
if (data == LOW)
{
   digitalWrite(pinApi, HIGH); 
   delay(100);
}
else 
{
   digitalWrite(pinAlarm,LOW);
delay (100);
}
}