The Digital Doc5 is loaded with goodies: Monitoring Temperature range 0C-100C, Monitors both +5 and +12 VDC, No Batteries, LCD Back Light Function, EEPROM Memory Chip For Settings, Supports 8 Fans, Override Auto Fan Control, 8 Temp Probes. So this may be cool addon for your case. Check out the review at OverclockersClub...

Digital Doc 5 review