Loading... Please wait...The DHT-22 is a low cost humidity and temperature sensor with a single wire digital interface. The sensor is calibrated and doesn't require extra components so you can get right to measuring relative humidity and temperature.
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Posted by Gareth Halfacree on 26th Sep 2011
The RHT03 (the actual product supplied, which is identical to the DHT22) is quick, accurate, and works on a single wire - but it's also pretty expensive.
There's a full review - plus a link to an Arduino library for communicating with it - over here:
http://hackerrevie.ws/2011/09/the-rht03-digital-temperature-and-humidity-sensor/