(We tested the Perisensor "infrasonic" volumetric detector from France, which recognised very low frequency pressure shock such as a window being opened – a concept that has, of course, recently been revitalised by Pyronix with their Veritec …)
"We are always wary of making outlandish claims but really even a buffoon with a screwdriver could get this one right - with just 10-15 volt power and two alarm terminals and two tamper terminals you could hardly go wrong.
"We subjected it to all manner of test programmes of a practical nature. It worked perfectly with perimeter door and window opening. We tried break glass tests and even simulated wall break using a soon to be demolished room partition. The Peri did all it claimed to do. Several installers said it was nice to use a sensor where siting was less of a problem than with PIRs.
Factors such as angle of view, radiators and direct sunlight were not important and installers liked the freedom of siting that this gave them."
Care-ful approach
(My, how it's grown ...)
"Telecom Red has announced that their CARE system has reached on unprecedented high level and as a result the network in both central and north London is currently being increased in capacity to enable local telephone exchanges to handle the extra demand. CARE has been available over a continually growing area for three years and currently covers well over half of London."
Banking on luck
(We've heard the story of the car that was never stolen despite the notice in the window which read "Please steal this car" but ... )
"One of the most startling security surveys we heard about recently concerned a middle Eastern bank.
Our informant tells us that when he was requested to undertake a survey of the premises where the cash holding at any one time was in the order of £1 /4m-plus, security was virtually non existent. No counter screens, no cameras no attack alarms - in fact no alarms in the building whatsoever. An aged nightwatchman slept in the building for security at nights and the staff entrance at the rear of the building had no lock on it. It was secured by a plank jammed against it!"
Be alert for building work
(But don't go prowling around building sites at night...)
"It's easy to overlook potential business that's right under your nose. Installers should be on the lookout for any new building work taking place in their area. There could be good business involved. Many of the sheltered housing projects that have sprung up in the last few years are built to a basic blueprint.
The builder/developer sells the completed project almost as a shell scheme to the private operator or local authority who then add their own particular features. Apart from the warden call systems there are additional opportunities for the installer in the way of door entry systems, locks and alarms, so keep a lookout in your area."
Source
Security Installer
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