#include <DHT.h>;
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

//Constants
#define DHTPIN 2     // what pin we're connected to
#define DHTTYPE DHT22   // DHT 22  (AM2302)
DHT dht(DHTPIN, DHTTYPE); //// Initialize DHT sensor for normal 16mhz Arduino

int suhu;
int relay = 7;
String a;

void setup() {
  dht.begin();
  lcd.init();
  lcd.backlight();
  pinMode (relay, OUTPUT);
}

void loop() {
  suhu = dht.readTemperature();
  lcd.setCursor (0, 0);
  lcd.print ("Suhu : "+String(suhu));
  lcd.setCursor (0, 1);
  lcd.print ("Kondisi AC :"+a);
  if (suhu < 20){
    digitalWrite (relay, LOW);
    a = "OFF";
  }else{
    digitalWrite (relay, HIGH);
    a = "ON";
  }
}