DHT11 Temperature And Humidity Sensor Module


৳ 150.00

DHT11 module is a Temperature and humidity sensing module, which uses Digital Signal Acquisition, which converts the Temperature and Humidity to a digital Reading, which can be easily read by a Microcontroller. Operating range of DHT11 is 0 to 50 degree Celsius which is quite sufficient for Home or Hobby purposes.
Features:
1 can detect ambient humidity and temperature
2 sensor DHT11
3 humidity measuring range: 20% -95% (range 0 degrees -50 degrees) and humidity measurement error: + – 5%
4 temperature measuring range: 0 degrees -50 degrees temperature measurement error: + – 2 degrees
4 Operating Voltage 3.3V-5V
5 Output Type Digital Output
6 has a fixed bolt hole for easy installation
7 small plates PCB size: 3.2cm * 1.4cm
8 Power indicator (red)
9 Each weighs about 8g
Two module interface specification (3-wire)
1 VCC 3.3V-5V external
2 GND External GND
3 DO small board switch digital output interface connected to the microcontroller IO port
Package Included
  • 1 X DHT11 Temperature And Humidity Sensor Module
  • feamle to female wire

Diagram

Sample Code :

#include "dht.h"
#define dht_apin A0 // Analog Pin sensor is connected to
 
dht DHT;
 
void setup(){
 
  Serial.begin(9600);
  delay(500);//Delay to let system boot
  Serial.println("DHT11 Humidity & temperature Sensor\n\n");
  delay(1000);//Wait before accessing Sensor
 
}//end "setup()"
 
void loop(){
  //Start of Program 
 
    DHT.read11(dht_apin);
    
    Serial.print("Current humidity = ");
    Serial.print(DHT.humidity);
    Serial.print("%  ");
    Serial.print("temperature = ");
    Serial.print(DHT.temperature); 
    Serial.println("C  ");
    
    delay(5000);//Wait 5 seconds before accessing sensor again.
 
  //Fastest should be once every two seconds.
 
}// end loop() 

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