@robtillaart
Also sensors which are not very accurate come with a datasheet. That is not really a criteria.
@Peter_n
It was just an example. But you are right, I didn't knew the DS18B20 yet.
But I am not just talking about temperature sensors. In general.
@weedpharma
That is probably right. But to general. I would like to have a list with all sensors and their accuracy.
I need to buy then now soon and to build the system. Answers like 'they have their price' or 'they come with datasheets' doesn't really help my in making my decision which sensors to get.