// Include the DHT sensor library.
						#include "DHT.h"
					
						// Define the digital pin and type of DHT sensor.
						#define DHTPIN D4 // Data pin connected to the DHT11
						#define DHTTYPE DHT11 // Specifies the DHT sensor type
					
						// Create a DHT sensor object.
						DHT dht(DHTPIN, DHTTYPE); // Initializes the DHT sensor
					
						void setup() {
						  Serial.begin(115200); // Begins serial communication
						  dht.begin();          // Starts the DHT sensor
						}
					
						void loop() {
						  // Waits a few seconds between measurements (DHT sensors should not be read more than once every 2 seconds)
						  delay(2000);
					
						  // Reads the humidity percentage
						  float humidity = dht.readHumidity();
						  // Reads the temperature in Celsius degrees
						  float temperature = dht.readTemperature();
					
						  // Checks if the readings failed and if so, exits the loop function.
						  if (isnan(humidity) || isnan(temperature)) {
							Serial.println("Failed to read from DHT sensor!");
							return;
						  }
					
						  // Prints the results to the serial monitor
						  Serial.print("Humidity: ");
						  Serial.print(humidity);
						  Serial.print("%  Temperature: ");
						  Serial.print(temperature);
						  Serial.println("°C");
						}