Jon,
The VFC6000 LCD, one for the fridge and one for the freezer, and then a record of the temps sent to the state each month electronically. Although this recorder/thermometer will be updated in the next month.
However, one concern that has been swimming around in my head, which is a another issue is getting a natural gas powered generator for emergency backup.
For instance our office with 9 docs loses power for 3-4 hour straight, the lost charges will more than pay for a generator. Or if one has remicade and other expensive meds, it may be cheaper to get a generator than lose the meds/vaccines.
There is a website VFCDataloggers.com