Hi, Fratello

some homework to do for you ...

take the DS18B20 Datasheet out, and look at :

1) How to get the device ID
2) How to address the device with it's ID

Buuuuuut, I do think ALL the answers you look for already are posted on this Maaarrrrrvellous Forum !!!

It's called SEARCH Function ...

Alain

PS: HELP Function momentarily out of use : New Year update ... lol