Re: [Electronics_101] Shopping cart security
----- Original Message -----
From: "Tom" <yahoo@...>
Sent: Wednesday, May 29, 2002 1:30 PM
Subject: Re: [Electronics_101] Shopping cart security
Well perhaps he wants to know stuff like how the circuit gets powered and
what kind of RF signal activates it. I am curious to know myself.
It gets powered like almost all mobile equipment, with a battery. As for the
rf signal, it's probably probably digital over a publc use band. It might
also operate like an electric fence for keeping dogs in the yard.