DHT11 DHT22 Temperature and Humidity Sensor

By | December 20, 2016

DHT11 & DHT22 temperature & humidity sensor are well known models which are used for monitoring the humidity and temperature of a vicinity or place. DHT11 and DHT22 models are used in thermostats and hygro thermometers which are used for different purposes on industrial and domestic levels.

DHT11 and DHT22 humidity and temperature sensors are temperature & stickiness sensor complex with a calibrated digital signal input. This device can be integrated with other electronic devices to achieve multiple targets one of them can be by utilizing the selective computerized sign securing system and temperature & dampness sensing innovation, DHT11 sensors ensure high reliability and excellent long-term stability for all kind of intended purposes.

The specialty of DHT11 and DHT22 is that sensor incorporates a resistive-sort moistness estimation segment and a NTC temperature estimation part, and associate with a high- execution 8-bit micro controller, offering fabulous quality, quick reaction, hostile to obstruction capacity and expense adequacy.

DHT11 DHT22 Temperature and Humidity Sensor

DHT11 / DHT22 Temperature and Humidity Sensor

Technical Specifications of DHT11 / DHT22 Series digital temperature and humidity sensor

Below are given few of the important features of DHT series temperature and humidity sensors. Technical Specification of DHT11 / DHT22 Temperature and Humidity Sensor

  • Full range of calibration, in-line digital output;
  • Humidity measuring range: 20% ~ 90% RH (0-50 temperature compensation);
  • Temperature measuring range: 0 ~ +50 ;
  • Humidity measurement accuracy:± 5.0% RH
  • Temperature measurement accuracy:± 2.0
  • Response time: < 5s;
  • Low power consumption
  • Power: 3-5.5V.
  • Resolution 1
  • Package 3 Pin Single Row

DHT11 Technical Specifications

Features of DHT11 / DHT22 Series digital temperature and humidity sensor

The single-wire serial interface of DHT sensors makes framework reconciliation brisk and simple. Its little size, low power utilization and up-to-20 meter signal transmission settling on it is the best option and decision for different applications, including those most requesting ones. The DHT11 part is 3-pin single line pin bundle. It is advantageous to associate and unique bundles can be given in response to popular demand.



The DHT11 and DHT22 temperature humidity sensor can improve to the aligned status bit by bit when it returns to the typical working condition and works inside its range. If it’s not too much trouble make an effort to remain mindful that working the DHT11 humidity and temperature sensor in the non-typical working conditions will quicken sensor’s maturing procedure.


DHT11 Interface with Arduino

Relative humidity to a great extent relies upon temperature of the area under consideration. In spite of the fact that temperature compensation innovation is utilized to guarantee exact estimation of RH, in order to get best results it is still encouraged to keep the dampness and temperature sensors working under the same temperature. As a standard rule DHT11 temperature and humidity sensor should to be mounted far from heat generating components because it will effect its performance. Also this to be noted that long time presentation to direct sunlight is not good for DHT sensors and it will spoil the DHT’s performance.