Re: pir false alarms

["Robert L Bass" <robertbass1@xxxxxxxxxxx>]

>>> After reading this I don't think Jim's
>>> the one thats confused, you apparently
>>> know nothing about PIR's...
>>
>> Apparently I know more about them than you and Jiminex combined.
>
> When warm air moves in front of a motion
> it will indeed be detected...

Only if it heats (or cools) the detector itself.  Air moving past but not directly contacting the detector and not heating an object
in the FOV will not change the amount of IR striking the transducer.

> which is why it is good installation policy
> not to point one at a heating/air conditioning
> vent...

Wrong again.  The reason you shouldn't aim a PIR at a heating vent is the vent itself and surfaces nearby can change temperature
rapidly.

> This is far more important than sealing
> holes in the PIR itself although who knows
> how you explain installing a motion to your
> clients, apparently it involves mounting
> the PIR away from a wall.

It is important not to point the detector at a heat source, but you misunderstand the reason why.  As to sealing the wiring hole,
that is simply good practice.  It helps keep drafts and bugs out  of the detector.

>> You spend all your time programming
>> alarms by modem.  I spent more than
>> two decades installing and servicing
>> them.
>
> Much like your knowledge of Frank you
> have no idea what I do

I know that like Olson, you're a BS artist with less field experience than most here except perhaps the idiot Petem.