Humidity and Temperature Sensor - DHT22

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  • Humidity and Temperature Sensor - DHT22
  • Humidity and Temperature Sensor - DHT22
  • Humidity and Temperature Sensor - DHT22


Humidity and Temperature Sensor - DHT22 Discontinued

The RHT03 (also known as 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.


  • 3.3-6V Input
  • 1-1.5mA measuring current
  • 40-50 uA standby current
  • Humidity from 0-100% RH
  • -40 - 80 degrees C temperature range
  • +-2% RH accuracy
  • +-0.5 degrees C


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Additional Information

Part Number:
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4 Reviews

  • 4
    Title of review 1061

    Posted by kannan on 6th Mar 2014

    I would probably order the cased one next time as I didn't realise this is really meant to be PCB mounted... otherwise performs as specified and does the job!

  • 5
    Title of review 1060

    Posted by Chris on 6th Jan 2014

    More stable than a TMP36 and with added humidity. I found the TMP36 had to be averaged out but this sensor is steady.A great little sensor for those starting out Arduino or Raspberry Pi. Either upload the data or put on an LCD display.A little pricey bu

  • 5
    Title of review 1059

    Posted by Hercules on 6th Jun 2012

    very helpful company, excellent sales and tech team

  • 4
    Title of review 1058

    Posted by Gareth Hal 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:htt

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