RE: Detecting an open door

["Paul Gordon" <paul_gordon@xxxxxxx>]

I also remember seeing a magnetic sensor on the CHC website designed
specifically for this application (gates/garages etc.) where the sensor
will
tolerate a much bigger gap before trigerring, and can cope with a degree of
movement within the sensor range (gates rattling in the wind etc...).
Again,
not a wireless or X10 solution though, but could perhaps be coupled to a
powerflash module?

Paul G.

>From: "Ray Barnett" <lists@xxxxxxx>
>Reply-To: ukha_d@xxxxxxx
>To: <ukha_d@xxxxxxx>
>Subject: RE: [ukha_d] Detecting an open door
>Date: Mon, 30 Sep 2002 11:06:27 +0100
>
>Comfort Home Controls sell or sold a range of wireless alarm modules,
>including a magnetic door sensor. This solution would only be any use
to
>you
>if you have something like Comfort though - so you can easily convert
the
>N/C output to something more X10 or home automation friendly. It would
>however be by far the most reliable solution to sensing the door open -
>variations on using X10 senders that I can think of would presumably
only
>send a pulse when the door first opened, which wouldn't be anywhere
near
>reliable enough for me to be happy with.
>
>FWIW, I've been toying with the idea of adding the wireless magnetic
sensor
>to my Conservatory door in a bid to automate turning off the heating to
>that
>room when the door is open. Price has discouraged me so far though, so
if
>you come up with a cheaper way for reliable wireless sensing of the
door
>status then please let me know.
>
>Ray Barnett.




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