Product review (2 stars): S-L-O-W ....
While the device works as advertised, the output is worthless for realtime data streaming.  Reading time is not predictable at 1-8 seconds, and the accuracy isn't stellar.  Rather than wasting money on the DHTxx series sensors, it is best to go straight to the next generation BME280 with reliable 20 ms read times, and for 3 parameters: temperature, humidity, and barometric pressure; the BME280 readings are very precise, and accuracy is within 2%.