Description
The DHT22 is a calibrated, accurate and stable Temperature and Humidity sensor and its signal output is digital. Below is the pinout of
1 – VDD Power supply 3 – 5.5 V DC
2 – DATA Serial data output
3 – NC Not connected
4 – GND Ground
WARNING: The DHT11 is cheaper but only good for 0-50°C temperature readings ±2°C accuracy. If you also need temperatur reading below zero you shoud use the DHT22 (-40 to 80°C) the White one!
