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Door Tamper Alarm Sensor

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RF Dude

Jan 1, 1970
0
Any advice for a door tamper alarm for an isolated site? The idea is to
sense that someone is trying to gain unlawful entry before they actually
open the door, thus providing additional time to respond. In the case of
only a door entry alarm, valuable time is lost trying to verify if the entry
is legitamite.

Unlawful entry would be via drilling a hole through the door to get to a
deadbolt latch, or a shock sensor if the door lock (say a Unican) was being
smashed off. Issue with the shock sensor is that it would have to ignore
the door slamming shut, which seems to rule out the piezo stick-on variety.
Perhaps the second or third whack with a sledge hammer would set off the
alarm?

All reasonable ideas appreciated. Cost is a factor, since there are many
doors that require this solution in my application.

RF Dude
 
F

Frank Olson

Jan 1, 1970
0
RF Dude said:
Any advice for a door tamper alarm for an isolated site? The idea is to
sense that someone is trying to gain unlawful entry before they actually
open the door, thus providing additional time to respond. In the case of
only a door entry alarm, valuable time is lost trying to verify if the
entry is legitamite.

Unlawful entry would be via drilling a hole through the door to get to a
deadbolt latch, or a shock sensor if the door lock (say a Unican) was
being smashed off. Issue with the shock sensor is that it would have to
ignore the door slamming shut, which seems to rule out the piezo stick-on
variety. Perhaps the second or third whack with a sledge hammer would set
off the alarm?

All reasonable ideas appreciated. Cost is a factor, since there are many
doors that require this solution in my application.


I'm assuming the building already has an alarm. Why not use an outdoor PIR
to trip a zone on the alarm. You can set up coverage so that it's
restricted to the door entry area. If you don't receive an opening within a
certain period of time, you can assume the worse and dispatch the guards.
This would work best if it was tied into a actual CCTV system you can
monitor off site...
 
C

Crash Gordon®

Jan 1, 1970
0
If the panel was cross-zoning capable he could cross zone the exterior pir with the door switch...that would work cool.

Maybe a small exterior pir over each door (like ceiling rex type) - of course we really don't have enough info so far.
 
N

Nick Markowitz

Jan 1, 1970
0
they still make shock sensors which could pick up an attack on a door
before it is opened .

--
Nick Markowitz Jr.
Owner
Markowitz Electic Protection
Private Industry Fire Investigator.
Qualified Electrical- Fire Alarm Contractor
Registered EPA Freon Recovery

Contributing Editor Pa. Firemans Magazine
Staff Editor www.securitymission.com
Senior Correspondant www.1strespondernews.com
Exclusive Correspondant www.nbfd.us
Contract Broadcast Engineer WAVL 910 AM apollo Pa.

"To error is human to realy foul things up requires a computer"

Irish Diplomacy

The ability to tell a man to go to hell and he tells you how much he is
going to enjoy the trip.
 
R

RF Dude

Jan 1, 1970
0
Think of many small business offices of a corporation, some of which are
located in more remote areas. There is an internal alarm system. Seems
that the culprits take their time gaining access then are smash and grab
artists. Once inside, vanalism is part of the problem, not just entry. It
is taking some time to get through the steel jacketed door, so obtaining
some additional warning that someone is tampering with the door would seem
useful. Looking around at some options, I see standard piezo shock sensors
might work, stuck to the door or frame. The integrator/pulse counter would
be necessary so that normal door operation is OK. I found a seismic sensor
at Aritech that gets very analytical about what is going on, but this adds
cost for each site that quickly escalates when multiplied out say 40 or 50
times. The client doesn't want to spring for cameras and DVR.

Thanks for the help.

RF Dude
 
J

Jackcsg

Jan 1, 1970
0
IEI makes a little shock sensor called the "Viper" which could be mounted on
a door frame, and can be set to "double knock". They work well, and price
wise 1/5 the cost of an AR unit. I would also consider placing some outdoor
motion sensor lights around and near the doors. Without getting involved
with cameras for verification, virtually any ideas you come up with may
become a nuisance. It would be nice to even have a Network Camera were you
wouldn't need head-end CCTV devices, but could have a means of verification.
It depends on what's inside I guess. Sooner or later paying for a good
system will justify not paying the insurance deductible on each occurrence,
or worse, writing off the loss. Without knowing all the variables, it's a
shot in the dark, including the limitations. Lights, Camera, Reaction vs.
nuisance alarms. Flip a coin.

Jack
 
C

Crash Gordon®

Jan 1, 1970
0
Jack beat me to recommending the IEI Viper. I've used them a lot for shock sensors...mount them on the door frame.
 
R

RF Dude

Jan 1, 1970
0
Thank you for all the useful advise. I talked to my supplier today. Also
got the option of the Aritec ADVISOR X which is for safes and bank machines.
Might be too sensitive and a bit of overkill. But PARADOX makes the SAFE
950 that is not UL listed (=cheaper) and better than half the price of the
ADVISOR.

So I've now found a sensor for attacks on metal enclosures, and the VIPER
and Sentrol versions, as well as the vault devices. How to decide? Looks
like I'll have to test a few of them at various locations. I'll post back
to the group if there is anything interesting to report.

RF Dude
 
F

Frank Olson

Jan 1, 1970
0
RF Dude said:
Thank you for all the useful advise. I talked to my supplier today. Also
got the option of the Aritec ADVISOR X which is for safes and bank
machines. Might be too sensitive and a bit of overkill. But PARADOX makes
the SAFE 950 that is not UL listed (=cheaper) and better than half the
price of the ADVISOR.

So I've now found a sensor for attacks on metal enclosures, and the VIPER
and Sentrol versions, as well as the vault devices. How to decide? Looks
like I'll have to test a few of them at various locations. I'll post back
to the group if there is anything interesting to report.

RF Dude


Have a look at some of the ideas on the www.optexamerica.com site.
 
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