#include "DHT.h"
#define DHT22_PIN  2    
#define DHTTYPE DHT22  

DHT dht(DHT22_PIN , DHTTYPE);

void setup() {
  Serial.begin(9600);
  dht.begin();
}

void loop() {
  delay(2000);

  Serial.print("Temperature: ");
  Serial.print(dht.readTemperature());

  Serial.print("  Humidity: ");
  Serial.print(dht.readHumidity());
  Serial.println();

}