Digit Squad - March 2016 - Relay + DHT

/*
 * Code displaying usage of relay using the DHT11 - Connect Signal pin to Digital pin no. 7 AND SWITCH to 8
 * Available for reproduction with proper attributions
 * Commented wherever necessary
 */
#include <dht.h>
#define switch 8
dht DHT;
#define DHT11_PIN 7
void setup()
{
   Serial.begin(9600);
   pinMode(switch, OUTPUT);
}
   void loop()
{
   int chk = DHT.read11(DHT11_PIN);
  if (DHT.temperature > 20){ //Checks whether the temperature is above 20Degree or not
   digitalWrite(switch,0); // Turns ON Switch
   Serial.println("Appliance is now ON");
   delay(1000); // Waiting is good
   } else {
   digitalWrite(switch,1); //Turns OFF the Switch
   Serial.println("Light OFF"); //for info
   delay(1000); //time in 1 sec = 1000ms
   }
}