No, not a tiny delivery man, although that's who delivered my father's new X10 controller today.

No, I'm looking for something to keep this thing's clock set when the power will invariably go out every week or so. I'm setting them up with an X10 system because they often travel and I want to have the lights go on no matter what. The device keeps all settings except for its clock in non-volatile memory.

But since this is a very small device that will be kept in a semi-prominent location, I want to find a UPS that is as small as possible. Does anyone have any suggestions? This is the smallest thing I can find so far, but I'm still not very good at figuring out how these power ratings relate to one-another.

Here are some of the specs for the X10 device:
"Power required: 12-28V AC/DC
Power Consumption @ 12V DC: 90mA"

Thanks for any help in advance.