DX  » Community » Reviews » DHT11 Digital Temperature Humidity Sensor Module for Arduino (Works with Official Arduino Boards)
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  • Overall Rating: 3
  • Price: 5
  • Quality: 4
  • Ease Of Use: 4
  • Usefulness: 3
Accuracy is not great – DHT11 Arduino Compatible Digital Temperature Humidity Sensor Module Reviews

posted by wout8b on 03/02/2013 Certified Owner

Involvement:General (knows how to use it) - Ownership:more than 1 month

Pros:
Cheap, easy to use, gives you temperature and humidity using only one dataline. I use it with Arduino + DHT11 library that can be found on the internet.
Cons:
Not very accurate, datasheet says +/- 2C. When I log temperature for a day, I see kind of spikes of 1-2C. I do not believe the actual temperature shows that kind of variation. "Average" temperature seems to agree with my room thermostat within a degree, which is not that bad.
Other:
I am now trying the DS18B20 sensor from DX, it is supposed to be more accurate. It does not offer the humidity signal
Bottomline:
Works but signal is not stable enough to use, for me at least.

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