Ks0034 keyestudio DHT11 Temperature and Humidity Sensor

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Introduction

This DHT11 Temperature and Humidity Sensor features calibrated digital signal output with the temperature and humidity sensor complex. Its technology ensures high reliability and excellent long-term stability. A high-performance 8-bit microcontroller is connected. This sensor includes a resistive element and a sense of wet NTC temperature measuring devices. It has advantages of excellent quality, fast response, anti-interference ability and high cost performance. Each DHT11 sensor features extremely accurate calibration data of humidity calibration chamber. The calibration coefficients stored in the OTP program memory, internal sensors detect signals in the process, and we should call these calibration coefficients. The single-wire serial interface system is integrated to make it quick and easy. Qualities of small size, low power, and 20-meter signal transmission distance makes it a wide +application and even the most demanding one. Convenient connection, special packages can be provided according to users need.
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Specification

  • Supply Voltage: +5 V
  • Temperature Range: 0-50 °C error of ± 2 °C
  • Humidity: 20-90% RH ± 5% RH error
  • Interface: Digital
  • Size: 30*20mm
  • Weight: 4g

Connection Diagram


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Sample Code

Please download the DHT11Lib firstly.Or to see the website

#include <dht11.h>
dht11 DHT;
#define DHT11_PIN 4
  
void setup(){
  Serial.begin(9600);
  Serial.println("DHT TEST PROGRAM ");
  Serial.print("LIBRARY VERSION: ");
  Serial.println(DHT11LIB_VERSION);
  Serial.println();
  Serial.println("Type,\tstatus,\tHumidity (%),\tTemperature (C)");
}
  
void loop(){
  int chk;
  Serial.print("DHT11, \t");
  chk = DHT.read(DHT11_PIN);    // READ DATA
  switch (chk){
    case DHTLIB_OK:  
                Serial.print("OK,\t"); 
                break;

case DHTLIB_ERROR_CHECKSUM: 

                Serial.print("Checksum error,\t"); 
                break;
    case DHTLIB_ERROR_TIMEOUT: 
                Serial.print("Time out error,\t"); 
                break;
    default: 
                Serial.print("Unknown error,\t"); 
                break;
  }
 // DISPLAT DATA
  Serial.print(DHT.humidity,1);
  Serial.print(",\t");
  Serial.println(DHT.temperature,1);
  
  delay(1000);
}

Resources

Video

http://www.keyestudio.com/wp/2016/05/ks0034-dht11-temperature-and-humidity-sensor/

PDF

https://drive.google.com/open?id=1WXBksGm64DvWtC_QFffcLs_g0p1YiM9L

Libraries

https://drive.google.com/open?id=1_P_JRmI_mZwg0hAqriFI21-oUjN5dgcH

Buy from

Official Website

http://www.keyestudio.com/keyestudio-dht11-temperature-and-humidity-sensor-for-arduino.html

Amazon Store

https://www.amazon.com/Keyestudio-Temperature-Humidity-Arduino-raspberry/dp/B0172TZ5ZQ/ref=sr_1_1?ie=UTF8&qid=1479954728&sr=8-1&keywords=keyestudio+DHT11+Temperature+and+Humidity+Sensor+for+Arduino