Control DHT11 20°- 90°

// ARDUINO UNO

#include <LiquidCrystal.h>
#include <DHT.h>

#define DHTpin 7
#define DHTtype DHT11

DHT dht11 (DHTpin, DHTtype);

LiquidCrystal lcd(13,12,11,10,9,8);

void setup() {
 // Serial.begin(9600);
  dht11.begin();
  lcd.begin(16,2);
  lcd.clear();

  pinMode(2,OUTPUT);//ejemplo q sea un motor

}

void loop() {
  int temp,hume;
  temp = dht11.readTemperature();
  hume = dht11.readHumidity();

if(temp>=20){
  digitalWrite(2,HIGH);
}

else {
  digitalWrite(2,LOW);
}
if(temp<=90)
{
  digitalWrite(2,HIGH);
}

else {
  digitalWrite(2,LOW);
}
 
lcd.setCursor(0,0);
  lcd.print("Temperatura ");
  lcd.print(temp);
  lcd.print("C");
  delay(2000);


}