Thank for reply !
The reading of temperature is ...chaotic ! Sometimes I want to see the temperature of outside, sometimes -the temperature of inside ! Without any rule !
So, I need one switch... OK, the ideea to use both sensor on the same bus it's good, but...i need to read the serial number of each sensor and keep this serials in eeprom ?! It is one simply way to do this with PBP commands ? I made once one termometer using 1-wire commands and I remember it's not so easy ...