DHT21 AM2301 Temperature and Humidity Sensor

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The DHT21 digital temperature sensor is one of the most common of its kind. It has a relatively high-temperature measurement accuracy of 0.5C to 0.1C steps with a relative humidity accuracy of +/- 3%

It has only 3 wires, 2 for power and 1 for output. One digital pin is required to interface it to a microcontroller. It is very well suited for common development boards like Arduino, NodeMCU, STM32 etc.



  • Accurate and durable
  • 4 pin package
  • Ultra-low power
  • No additional components
  • Stable
  • All calibration, digital output
  • Completely interchangeable
  • Long-distance signal transmission
  • Relative humidity and temperature measurement



  • Power: DC 3.3-5.2V
  • HUMI: 0 ~ 99.9% RH
  • TEMP: -40 ~ 80C
  • Precision: 3% RH, 0.5C
  • Output: Digital (1 wire)
  • Dimension: 60 x 27 x 14mm (L x W x H)



  • 1 * DHT21 AM2301 Temperature & Humidity Sensor

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We ship Australia wide to all addresses, including PO Box, Parcel Locker, etc.

The following shipping options available are listed below:

Australian Orders

  • Standard Shipping – Free (low cost / small products) – Sent via standard Australia Post stamped mail, 3 – 7 business days delivery depending on location, minimal tracking.
  • Standard Shipping – Free (higher cost / larger products) – Sent via Australia Post Parcel Service or Courier Service, depending on location and mailing address, 2 – 5 business days delivery, with full tracking.
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Orders outside of metro orders can take 2+ days longer than the estimates stated above.

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More Information

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