Driveway Alarm Module?

["Bob Sisson" <bob@xxxxxxxxxxxxxxxxxxxx>]

I am looking for a RELIABLE inductive driveway alarm module that I can use
to detect cars coming up the driveway.

I don't want to use motion as we have lots of deer that use our driveway as
well.

Most of the modules I have seen are Pro-homeowner grade, not very adjustable
(tunable) or reliable. My neighbor uses a pro module the state uses for its
counter loops and it is bullet proof, but he doesn't remember where he got
it.

Bob