D-TECT3 detectors reduce nuisance alarms at Manchester school

(17/07/2008)

In 2007 a Manchester school had an external CCTV system installed by a very credible NSI Gold installation company using 'Conventional' External PIRs, but within a few weeks of commissioning the system, it was apparent that the detection was generating lots of false alarms and the school demanded that something was done to eliminate the problem.

RemGuard needed to come up with a viable and economic solution. In conjunction with their approved installers they removed the original PIRs and replaced them with D-TECT3 detectors from GJD Manufacturing Limited.

Alan Collinge, Operations Director for RemGuard RVRC, commented: "To be honest, we were at first very surprised and then greatly encouraged by the low number of false triggers from the GJD D-TECT's. In fact since the site was commissioned there have only been a handful of unconfirmed alarms and every time the D-TECT3's trigger, a genuine activation has been confirmed."

He added: "What's more, the D-TECT3 outperforms the more expensive products on the market so they score on cost, are much easier to install and set-up, more attractive in design and are probably less vulnerable to attack than other PIR's. Suffice to say that we and the school are more than delighted with the performance of the D-TECT3 PIR's."

One of the unique features of the D-TECT's is the integral masking curtains, which allows the installer to easily adjust the field of view from 10degrees for perimeters and up to 70 degrees for open spaces. The adjustable pan & tilt electronics module, coupled with a mounting height of up to 6 metres, allows the view of the sensor and the camera to be closely matched and as the detector's range is programmable, potential boundary overspill scenarios are prevented. The convenience and time-saving afforded by the GJD hand held remote IR range adjuster is also a big benefit for installers.

Month 1 was the last complete month with the 'Conventional' External PIRs, the installation company replaced all the external detectors with GJD D-TECT3 units in Month 2. Month 3 was the first complete month with the D-TECT3's. The reduction in nuisance alarms was immediate.

A monthly comparison shows that:-
Comparing Month 1 to Month 3:
False alarms reduced from 220 to 3
Environmental alarms reduced from 162 to 1
Wildlife alarms reduced from 257 to 2

Related topics:  CCTV system and accessories   Door entry systems and locks   Intrusion detection   Sensors and detectors   Surveillance 

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