#include "DHT.h"
#define DHTPIN 15  
#define DHTTYPE DHT22 
#define RELAY_PIN 23

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  dht.begin();
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);
}

void loop() {
  delay(1000);
  float temperature = dht.readTemperature();
  
  if (temperature > 30.0) {
    digitalWrite(RELAY_PIN, HIGH);
  } else {
    digitalWrite(RELAY_PIN, LOW);
  }
}