DHT11 Temperature and Relative Humidity Sensor Module

The DHT11 is a rel­a­tive­ly cheap sen­sor for mea­sur­ing tem­per­a­ture and humid­i­ty. This arti­cle describes a small library for read­ing both from the sen­sor. The DHT22 is sim­i­lar to the DHT11 and has greater accu­ra­cy. How­ev­er, this library is not suit­able for the DHT21 orDHT22 as they have a dif­fer­ent data for­mat. Check DHTlib for sup­port of these sen­sors.Fea­ture 1. can detect sur­round­ing envi­ron­ment of the humid­i­ty and tem­per­a­ture 2. DHT11 sen­sor adopts 3. humid­i­ty mea­sure­ment range: 20%-95%, humid­i­ty mea­sure­ment error: -5% 4. tem­per­a­ture mea­sure­ment range: 0 ‑50 ℃, mea­sure­ment error: -2 degrees 5. work­ing volt­age 3.3 V‑5 V 6. out­put form dig­i­tal out­put 7. has fixed bolt hole and easy instal­la­tion 8. PCB size: 3.1 cm * 1.4 cmDownloadsArduino library and exam­ple code for DHT sen­sorsDHT11 datasheet