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DHT20 - AHT20 Pin Module - I2C Temperature and Humidity Sensor Adafruit 5183
The DHT20 is a nice but inexpensive temperature and humidity sensor from the same folks that brought us the DHT22. This little sensor looks an awful lot like the popular temperature and humidity sensors, but unlike classic DHT sensors, it has an I²C interface! That's right, you do not need to use a bit-bang timing-specific protocol to talk to the DHT20, it uses And, you can power it with anything from 2.5V to 5.5V so it's good with 3V or 5V microcontrollers. Whew, that makes things a little easier, doesn't it? Inside is the AHT

Price is $9.00
Price: $8.54