Re: Re: Freezer Alarm

["Campbell Macdonald" <campbell@xxxxxxx>]

Maplin do some cheap alarm switch which are quite small ?/


Campbell
----- Original Message -----
From: "Steve B" <steve@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Tuesday, May 21, 2002 11:06 AM
Subject: RE: [ukha_d] Re: Freezer Alarm


> Havent read the whole thread so excuse me if i am way out of the
> conversation here.
>
> If your detecting the door and the doors have magnetic strips in - why
not
> a minature read switch ?
>
> At 05:40 21/05/2002 -0400, you wrote:
> >With either Andy's or Ken's suggestions (both switches of some
sort)
instead
> >of mounting on the side of the door, you may wish to mount it
underneath
the
> >door. It's then less visible and the freezer may fit into it's
space a
bit
> >easier. Our fridge / freezer is free-standing but it has an
apperature
into
> >which it fits. Mounting something on the side would foul the
hole.
Downside,
> >of course, is that the alarm will be a bugger to fit & test
when mounted
> >underneath ;-)
> >
> >Cheers,
> >
> >Tim H.
> >
> >-----Original Message-----
> >From: andy_powell_is
> >
> >What about a door contact closure stuck on the door, (normally
Open) -
> >you know the kind of thing, those magnetic ones used on alarm
> >systems, this could be wired back to Homevision (if you have
one)
> >whcih could handle the logic..
> >
> >Crappy drawing below (side view of freezer door)
> >
> >     YYYYY XXXXX     
YYYYY =  NC/NO contact (to Homevision)
> >     ----+ +----+    
XXXXX =  'other bit' stuck on the door
> >       F   D  
> >       R   O  
> >       E   O  
> >       Z   R  
> >     ----+ +----+
> >
> >
> >Andy
> >
> >
> >--- In ukha_d@y..., "Don McAllister" <donmc@b...>
wrote:
> > > Ken, It's freestanding and located in our utility room so
any old
> >kludge
> > > will do. The utility room is next to the kitchen so any
audible
> >alarm
> > > would suffice. Thought if it could trigger after two minutes
of the
> >door
> > > being left ajar that would probably do it. I wouldn't want
to get so
> > > sophisticated as measuring the temp.
> > >
> > > Cheers
> > > Don
> > >
> > > > -----Original Message-----
> > > > From: Kenneth Watt [mailto:kennwatt@b...]
> > > > Sent: 21 May 2002 09:36
> > > > To: ukha_d@xxxxxxx
> > > > Subject: RE: [ukha_d] Freezer Alarm
> > > >
> > > > Don is it integrated or freestanding?
> > > >
> > > > BTW, if the alarm light comes on then the temp has
already, on
> >most
> > > > machines, risen to above -15C and the food has already
started to
> > > > perish!!
> > > >
> > > > -18C is the optimum temp for food storage and most
machines cycle
> > > > between -15C and -21C to give an average -18C so,
basically if you
> > > > notice that the food is soft it's out with the big
frying pan! ;-)
> > > >
> > > > K.
> > > >
> > > > > -----Original Message-----
> > > > > From: Don McAllister [mailto:donmc@b...]
> > > > > Sent: 21 May 2002 09:11
> > > > > To: ukha_d@xxxxxxx
> > > > > Subject: RE: [ukha_d] Freezer Alarm
> > > > >
> > > > > I was thinking more of some sort of contact switch
and audible
> >alarm
> > > > > with a setting to go off if the contact is broken
for more than
> >a
> > > set
> > > > > time. Looking for something self contained and
simple.
> > > > >
> > > > > Don
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: Mark McCall [mailto:mark@a...]
> > > > > > Sent: 21 May 2002 08:59
> > > > > > To: ukha_d@xxxxxxx
> > > > > > Subject: Re: [ukha_d] Freezer Alarm
> > > > > >
> > > > > > > SWMBO has requested a Freezer Alarm due
to me leaving the
> > > freezer
> > > > > door
> > > > > > > ajar for the 3rd time :-)
> > > > > > >
> > > > > > > Any pre-built solutions available or any
suggestions
> > > appreciated.
> > > > > >
> > > > > > Does it have a light?  Could you monitor
that and alarm if
> >it's on
> > > > for
> > > > > > more
> > > > > > than say 30secs.
> > > > > >
> > > > > > M.
> > > > > >
> > > > > >
> > > > > >
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