PowerLinx Inc (PWNX)

[Moron]

Basic technology question:

There have been a few posts over on Raging BS about the ability for commercial SecureView systems to transmit during the day, at a time when there is reportedly no power to the lines. I may be mis-representing the question, but I think it's pretty close. The argument is that the signal can't travel through an incomplete circuit. Seems like a logical question, but are either of the following scenarios possible?

First, is the power truly off during the day, or are some systems always hot but the lights only come on when the photo sensor indicates darkness? There may not be AC current flowing during the day, but I believe the claims of the product are that they generate their own power (via rechargeable battery) when it's not available in the line.

Secondly, even if the "switch" or circuit breaker is off during the day, does a circuit breaker or switch disconnect both leads, or only the hot one? I'm no electrician, but it seems as though disconnecting both leads would disrupt the common ground. If the SecureView video signal is being transmitted by battery power, shouldn't it be able to utilize the ground lead in the electrical system?

Does anyone have any insights on this?

Thanks