UPS APC LE1200 Automatic Voltage Regulator
This thing is heavy, which is usually a good sign for this type of
product. It does what even good UPS's don't, and that's regulate your
power even when it fluctuates mildly. Sure, many products will protect
you from 140V+ or turn on at 90V, but that's still enough to burn out
everything from a simple wall wart power brick to a DVR from
dishnetwork. I know, as I've experienced such things with my crappy Los
Angeles power service. In afternoons, it'll drop to 110V, and if I use
the garbage disposal, a laser printer, or turn on my stereo and 2
amplifiers, voltage drops below 108V. This is enough to destroy many
sensitive products over time. It's so bad in my house, that it's
destroyed two UPS's by forcing them to click on and off so much and to
compensate for low voltage so much they burned out!
The APC LE1200 prevents this damage. It clicks on and returns
voltage levels back to around 120V at a level high enough that your
electronics don't get damage before they are protected (what's the point
of protection that only helps once the damage is done?). I know it's
working because I can hear it click on, and return power to the right
levels even as my house voltage sits at 106-108V (confirmed by the
voltage meter in my Panamax).
I'm so impressed with the performance of this unit in my home
theater that I bought 2 more, one to protect my computer (it installs
between the UPS and the wall to protect the computer and the UPS), and
one for my plasma TV (because it's located away from my HT equipment).
At $50 a piece, this thing is a no brainer. A quality UPS is 3-5x as
much and still doesn't protect your equipment as well. And it can burn
out. The LE1200 has little chance of burning out, so for equipment that
doesn't need battery backup, or even to feed a UPS, this product is the
way to go.
APC LE1200 Line-R 1200VA Automatic Voltage Regulator