What is 'best' temperature sensor for an array of sensors
For such a sensor network I would absolutely consider using Dallas 1-wire components for great flexibility and reasonable price. It is well supported in Linux via owfs.



At www.hobby-boards.com there is a small T3-R1-A ready made board which you just connect with cat5/RJ45 priced at 18USD. According to the documentation it uses the DS18S20 sensor like already mentioned by BG100.