The sample sketch provided called DHT_Unified_Sensor.ino displays details about the temperature and humidity sensors. One of the properties is the resolution. For the tempertaure sensor it reports a resolution of 2.0°C
The resolution for this sensor is 0.1°C according to both the spec sheet and observation:Temperature Sensor
Sensor Type: DHT11
Driver Ver: 1
Unique ID: -1
Max Value: 50.00°C
Min Value: 0.00°C
Resolution: 2.00°C
Here is a spec sheet that states 0.1°C:Temperature: 19.90°C Humidity: 35.00%
Temperature: 19.80°C Humidity: 35.00%
https://image.dfrobot.com/image/data/KI ... asheet.pdf
The AOSONG DHT11 has a 2° accuracy, and they claim a 1°C resolution. See https://www.electronicoscaldas.com/data ... Aosong.pdf
I suspect someone has confused resolution (smallest difference reported) with accuracy (max delta to actual temp), here is an Adafruit description of the DHT11 and DHT22 in which the accuracy is slated to be 2.0°C
https://cdn-learn.adafruit.com/downloads/pdf/dht.pdf
Here is a data sheet that says it has a 1°C resolution (probably an AOSANG):
https://www.mouser.com/datasheet/2/758/ ... 143054.pdf
Anyway, I believe it is 0.1°C. that is what I am getting out of a 4 pin module on a small breakout board.
2.0 is incorrect on all counts, it should be 1 or 0.1