Re: Dual-tech 360 motion recommendations please

["Roland" <roland@xxxxxxxxxxxx>]

Usually there are multiple frequencies on the microwave portion of the dual
tech (or tri-tech as Bosch likes to call them). Usually there is a blue dot
for one frequency, and a red for another, etc. There are typically 4
frequencies available to avoid cross talk. Just make sure you have different
ones when you install them.
"Jim" <alarminex@xxxxxxx> wrote in message
news:1175212227.298377.71190@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Mar 28, 6:41?pm, Milhouse Van Houten <n...@xxxxxxxxx> wrote:
> I need a 360 that I can mount at 25' high and have coverage on the
> ground at 100' diameter (50' radius from unit).  Preferably dual-tech
> because it's in a non-climate controlled metal bldg and two of the
> microwave zone will likely intersect.
>
> Is there such a beast? I was looking at some Optex stuff but nothing
> seems to fit the bill.
>
> Thanks.

I don't have any suggestions for a unit for you but two things I'd
keep in mind:

Dual tec units mounted in proximty to one another can constantly cause
the microwave portion to be in alarm state. And two, microwave used in
the proximity of large metal objects can be problimatical. You just
might be better off with some of the quad outdoor PIR's such a Crow
mfgs.

Another thing, although not normally done, I've been successful in
mounting wall mount motion detectors on the ceiling. You'd probably
have to use more of them but overlap wouldn't be a problem and you
just might be able to get better coverage.