Review on 4PCS Geekstory DHT22 AM2302 Digital Temperature Humidity Sensor Module - Monitor Temperature and Humidity Levels, Perfect Replacement for SHT11 SHT15, Ideal for Arduino Raspberry Pi by Tom Beland
Good temperature/humidity sensor
These are good sensors to start with. There are no problems with addressing as they don't use I2C - only GPIO. The only issue I had was that if you need a longer cable it tends to fizzle out and not work very reliably. Otherwise they are fairly accurate and reliable. I wouldn't update the sensor data more than once every few seconds (I did it once a minute) because it will annoy you, but it works damn well.
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