#include "DHT.h"
#define DHTPIN 13
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
void setup()
{
  Serial.begin(115200);
  dht.begin();
  pinMode(4, OUTPUT);
}
void loop() {
  float temperature = dht.readTemperature();
  if(temperature>20){
    digitalWrite(4,HIGH);
    Serial.println(temperature);
  }
  else{
    digitalWrite(4,LOW);
    Serial.println(temperature);
  }
}