Mastco produces the real high end temperature monitoring solution. In fact when the stakes are high, the Mastco AlarmLog system is right on the money. While most tempurature monitoring systems offer either a local logging solution or a central data collection center with a bunch of dumb probes dangling off of it, Mastco combines the best in a client server and peer to peer network. The AlarmLog module acts as a standalone temperature probe, logger, and alarm system in one. Now comes the great part... Up to 140 AlarmLogs ( or related DualLogs) can be connected up to a central ScanLog to create an extremely robust data acquisition system

Mastco brochure
Manufacturers website