Bob,
The description answers 2 of your questions:
"Detailed Description
Complete electrical protection for your RV! Automatically shuts off the power when detecting incorrectly wired pedestal, power surges, low (<102V) and high (>132V) voltage, reverse polarity, and dangerous current on ground wire.
Automatically resets on power restoration. Features caution indicator light to indicate cause of power stoppage. 2 minute 16 second reset delay protects AC compressor.
Weather resistant, 10/3 AWG cord. Offers 1750 joules of surge protection."
As far as securing the unit goes.....ooops is right (or is that "D'oh!")!
I have been searching the web and can't find a solution. Will keep searching though and will post any results.
Dave