Re: PIR's: Why trip on two detects?

["Jim" <alarminex@xxxxxxx>]

Nomen Nescio wrote:
> Jim said:
>
> >> Offhand, I can't think of any dual tech that can be set to trip on either
> >> PIR or MW, rather than both.  Which one are you thinking of?
> >
> >The Sentrol AR 435 for one and I think some of the Visonic dual tec's
> >also.
>
> I know the AR 435 can be set for microwave-only, but that's not quite what
> Frank was talking about originally.   He was mentioning a dual tec that
> would go into alarm if either the PIR or the microwave was tripped.


hmmm ..... Sorry ..... but I missed that.

 > I don't know whether any of the Visonics do that.

I don't know of any motion detector that does that.


>
> I wouldn't think there'd be too much demand for it.  Instead of reducing
> false alarms, such a detector would increase them, as anything that would
> trip either technology would cause an alarm.

Yeah, but I bet it would sell for a really low price!