#define buzzer 9

const uint8_t maxDetector = 2;
const uint8_t waterDetectors[] = {A0, A1};  // Define Analog Input Pins
const uint8_t alarmLamps[] = {2, 3};        // Define Alarm Lamp Pins
int detectorValues [maxDetector];           // Define Read Value Buffers for future use

bool warning = false;
bool alarm = false;
bool currWarning = false;
bool currAlarm = false;

String statusMessage = "";
unsigned long prevTime = millis();
unsigned long interval = 1000;

void setup() {
  Serial.begin(9600);
  pinMode(buzzer, OUTPUT);
  for (uint8_t index = 0; index < maxDetector; index++) {
    pinMode(alarmLamps[index], OUTPUT);
  }
}
void loop() {
  warning = false;
  alarm = false;
  statusMessage = "";
  for (uint8_t index = 0; index < maxDetector; index++) {
    detectorValues[index] = analogRead(waterDetectors[index]);  // Read Water Level
    if (detectorValues[index] >= 300) {                         // Water Alarm Level
      currAlarm = true;
      digitalWrite(alarmLamps[index], HIGH);
    } else if (detectorValues[index] >= 250) {                  // Water Warning Level
      currWarning = true;
    } else {
      currAlarm = false;
      currWarning = false;
      digitalWrite(alarmLamps[index], LOW);
    }

    warning |= currWarning; // Common Warning
    alarm |= currAlarm;     // Common Alarm

    if (index > 0) {
      statusMessage = statusMessage + ", " +  + "Detector" + String(index + 1) + " Value:= " + String(detectorValues[index]);
    } else {
      statusMessage = "Detector1 Value:= " + String(detectorValues[index]);
    }

  }

  if (alarm) {          // Alarm
    tone(buzzer, 5000);
  }
  else if (warning) {   // Warning
    tone(buzzer, 1000, 5);
  }
  else {                // Normal
    noTone(buzzer);
  }

  if (millis() - prevTime >= interval) {
    prevTime = millis();
    Serial.println(statusMessage);
  }
}