Re: What kind of sensor did I see today?

["Robert L Bass" <robertlbass@xxxxxxxxxxx>]

> Does the intruder break the wire,
> thus breaking continuity...

Yes.  They used to "lace" doors and vent openings with this wire and that is
exactly how it worked.  The problem is the stuff is easy to break and can
require a lot of maintenance.  Some installers used to make basswood (no
relation to this writer:)) screens to protect openings.  The basswood dowels
are light but not particularly flexible.  The wires were embedded in a slot
that ran the length of each piece of woord.  A thief would have to break or
dislodge the screen to get in.  Doing so broke the circuit.

These wire lacing schemes are not too common but you'll run into them from
time to time.  Some of them are still in use.  For certain types of openings
the wire lace is still effective.

--

Regards,
Robert L Bass

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