Humidity Guardian

#include <DHT22.h>        //DHT22 libary

#define DHT22_PIN 11      // Pin for DHT22
#define BUZZER_PIN 13     // Pin for Buzzer
#define RELAIS_PIN 12     // Pin for relay

DHT22 dht22(DHT22_PIN);

bool relayTurnedOn;

void setup() {
  Serial.begin(9600);
  Serial.println("Arduino is working!");
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  digitalWrite(12, LOW);
}

void loop() {

       // Wait 2 seconds
      delay(2000);
      
      float humidity = dht22.getHumidity();
      float temperature = dht22.getTemperature();
      

    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.print(" °C, ");
    Serial.print("Humidity: ");
    Serial.print(humidity);
    Serial.println(" %");


    // Buzzer
    if (humidity >= 60){
      tone(13, 1000, 200);  
    } else if(humidity < 50){
      noTone(13);
    }
    
        // Controll the relay based on temperature
    if (temperature >= 15 && !relayTurnedOn) {
      digitalWrite(12, LOW);  //turn relay on
       relayTurnedOn = true;
      Serial.println("Relay On");
    } else if (temperature <=5 && relayTurnedOn) {
      digitalWrite(12, HIGH);  // turn relay off
       relayTurnedOn= false;
      Serial.println("Relay Off");
    }
   
    delay(1000);
  }