We've finally got round to starting redecorating the house we moved
last year and have got a couple of questions -
It's a modern house with plasterboard walls. We've stripped the vinyl
wallpaper with a steamer. This has left us with some small expanses of
bare plasterboard, and larger areas of a coat of vinyl paint, much of
which is smooth but some of which as bubbled under the steamer -
what's the best way to attack it and end up with a smooth surface ?
We removed a dado rail which had been stuck to the wallpaper.
Unfortunately, the glue had soaked through the wallpaper and in some
places has taken the top layer of plasterboard off - whats the best
thing to fill it with.
burglar alarm sensor in one corner of the room is loose and needs
re-attaching. You have to open the sensor to get at the screw, but
every time you open the sensor case, the alarm goes off, even though
the alarm is switched off. (the alarm is a 'logic 400; with 4 key
positions - off, test, part and full - we rarely turn it on, and its
and thoughts appreciated
On Tue, 30 Sep 2003 10:43:54 +0100, Dave Plowman wrote:
Errm, to prevent tampering :-) Seriously, breaking the tamper circuit in
an unset system will activate the internal sounders only. This will give
notice of any tampering or fault on the circuits while the system is unset.
If the system is set, breaking the tamper circuit will give a full alarm -
this will activate external monitoring and/or all internal/external
sounders depending on the system.
Believe me, I know - I have one of the subject panels in my house (as well
as being an alarm service engineer for 38 years). BTW, there is no
engineer code for this panel - it's an old key-operated unit.
And read what I said again.
After you've serviced the system, it is more than likely that the people are
still in the house with the alarm "Unset". So following you around, I
should be able to take the external sounder off the wall and be away on my
toes, well before the occupier has realised what the F is going on and
begins fiddling with the control.
So agian, I'll repeat. I should be able to make me'self a few bob on
external sounders if I follow you around.
So you don't loop tamper the Self Activating Bell with the rest of the
system tamper ? Or do you isolate the tamper on the external sounder from
the rest of the system in some way ?
Every tamper switch, on all our systems at least, are interconnected by
default. So if one goes active, they all go active, including the external
sounders. And any anti-tamper system, I am aware of anyway, should be fully
active continually, be the system set or unset. I thought the whole point
of having an anti-tamper system, looped around all connected appliances and
peripherals, was there to give a warning of someone or something interfering
with what shouldn't be interfered with, and it should give this warning
through all connected sounder and other indicator devices, which, to me and
many others in my neck of the woods, means the external sounder as well as
But being twenty years in the security trade, and after designing and beta
testing some the leading systems on the current market, I might still be
wrong in this point and would love to hear from anyone who knows what I've
been doing wrong all this time.
On Wed, 01 Oct 2003 08:12:40 GMT, BigWallop wrote:
This discussion is really getting a little too detailed for a public
newsgroup. For obvious reasons I'd prefer to take this to email if you'd
care to continue.
My email address on this article is valid and is checked about once a day.
No, thank you. Please don't take offence at the refusal, it's just that I
don't like talking business when I'm relaxing at the computer. I do enough
when on these crazy shifts, so when the chance comes to diversify on to
other things in here, then I jump at it. After all these years of the same
Sameness, I find it is not worth arguing over others opinions of what the
sameness should be.
Spherical objects. Any tealeaf worth his salt already knows how alarm
systems work and may well have a better knowledge of more systems than
a so called alarm engineer does.
I detect some one trying to hide behind the rocket science of alarms
systems. Damn stupid 'cause rocket science they aren't. Now multiple
zone panels, with multiple part sets and multiple user levels are
another kettle of fish but that doesn't affect the simple wiring
interconnecting sensors and the panel.
Dave. pam is missing e-mail
156 zones, some with timed entry / exit for cleaners, other zones with keyed
isolation that security guards could used to go on their rounds. Main
points have a local and remote audible ping, warning of entry into a
resticted area, with a delay of 20 seconds before a full alarm is generated.
Other areas used when and if needed, and are controlled from the security
office, and anyone using those areas has to present a token to the entry
door, which then tells the security office that the person has arrived at
the point they should be at and nowhere else.
Then a painter knocks the cover off a dual-tech PIR and all hell breaks
loose on the tamper system, which was also zoned because of the size of the
system, I'm glad to say, but it shows you that a tamper is needed on any
system, no matter how big or small. It's there for a really good reason.
With only a local panel sounder, the painter hears nothing, by the time a
security guard gets to the area, the painter has picked up the cover and
replaced it with no one knowing. The job of finding the fault is made much
more difficult by the fact that, the faulty detector is now diguised by the
painter replacing the front cover. But, due to the tamper circuit doing its
job properly, the painter got such a fright and left everything alone where
it fell, and the job of finding the faulty detector is made really easy
because the young painter is spinning around in shock in the noisy corridor
saying "sorry" every couple of seconds.
With a high security system like this one, the slightest thing out of place
could cost millions to put right, so, although we are insured as a company,
it is better to get it right on something as important as this.
Boy !!! Those were the days. :-))
But warn who? Does the whole street need to know you just put
a nail through an alarm cable, or just those in the household?
A false alarm of this nature is very likely to make a genuine
alarm ignored. Anti-tamper system should certainly be active
all the time, but that doesn't mean it always has to generate
the same type of alarm (panel capabilities permitting).
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