#include <DHT.h>
#define DHTPIN 2
#define DHTTYPE 22
DHT dht(DHTPIN,DHTTYPE);
int relay=8;
void setup() {
  // put your setup code here, to run once:
dht.begin();
pinMode(relay, OUTPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
float value=dht.readTemperature();
Serial.println(value);
if(value>=30)
{
  digitalWrite(relay, HIGH);
}
else
{
  digitalWrite(relay, LOW);
}
delay(500);
}