#include <DHT.h>
#define DHTPIN 2 
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
const int LED_RT=7;
const int LED_BH=8;
int BuzzerPin=5;


void setup() {
  dht.begin();
  pinMode(BuzzerPin, OUTPUT);
  Serial.begin(9600);


  // put your setup code here, to run once
}

void loop() {
  float temp_in,humi;
  temp_in=dht.readTemperature();
  humi=dht.readHumidity();

Serial.print("T=");
Serial.print(temp_in);
Serial.print("  ");
Serial.print("H=");
Serial.print(humi);



  if(temp_in>23||temp_in<20)
    {tone(BuzzerPin,800);
    digitalWrite(LED_RT, HIGH);
    delay(1000);
    digitalWrite(LED_RT,LOW);
    noTone(BuzzerPin);
    delay(1000);
    }

Serial.print("");
Serial.print("T=");
Serial.print(temp_in);
Serial.print("  ");

  if(humi>90||humi<70)
  { tone(BuzzerPin,800);
    digitalWrite(LED_BH, HIGH);
    delay(1000);
    digitalWrite(LED_BH,LOW);
    noTone(BuzzerPin);
    delay(1000);
    }

  Serial.print("H=");
  Serial.print(humi); 
  Serial.print(""); 
  // put your main code here, to run repeatedly:

}