Re: Failure rate of window / door magnetic sensors

["Slim" <nosp@xxxxx>]

sounds like you might have a grounding problem.


<borne@xxxxxxxx> wrote in message
news:1191245853.355980.22100@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>I installed my own security system 8 years ago.  Last week, lightning
> struck our house and fried all sorts of things.  I discovered about
> half of my window and door magnetic switches were bad.  The control
> panel was fried, but I fixed that.
>
> I have Ademco mini stick on NC sensors.  Of the broken ones, all but
> one was broken so that they are always closed.  One broke always
> open.
>
> I can assume the one that was open was caused by the lightning
> strike.  But what about the others that are broken closed?  Did the
> lighting do that, or do these types of switches fail over the years?
>
> Thanks
>