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DHT22 Temperature and Humidity Sensor Module

Two sensors on one board design, one data wire, one library. What each is worth, why the same forty bits decode two ways, and the six-pack that holds three of each.

Temperature: ±0.5°C, −40 to 80 °C
Humidity: ±2% RH, 0 to 100 %
Wires: 3GND, VCC, DATA

Start here · 01 Two numbers, one pin The reference

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The whole handbook12 articles · 55 min CodeZIP · 1016 B DatasheetPDF · sparkfun.com Pinout and specsThe pin table, and the questions people ask first

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DHT22 Temperature and Humidity Sensor Module

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Need another

Comes in this kit — not sold separately

DHT Sensor Kit: 3 × DHT22 and 3 × DHT11

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