[Boatanchors] Security System

[david knepper]

Would anyone know where one could purchase a relatively inexpensive security 
system that would detect someone coming up a long driveway.  The detector 
would send a wireless signal to the house to alert the resident that someone 
is coming up the driveway.  Of course, the detection unit would have to work 
from batteries.

I have done a cursory search but to no avail.

Thank you

Dave, W3ST
Publisher of the Collins Journal
Secretary to the Collins Radio Association
www.collinsra.com - the CRA Website
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