RE: Re: MS13 PIR detection through glass?

["Paul Gordon" <paul_gordon@xxxxxxxxxxx>]

Absolutely... - even though it is well sheltered, it is nonetheless
outside,
and I do live in a city, so it's going to be subject to possible build up
of
grime on the lens.. I'm hoping its as simple as that anyway... - haven't
had
a chance to get up the ladder & open it up yet....

Paul G.



>
>Paul, as for your question - is it possible that there is a build up
>of algae on the inside of the lens? ... I suspect these are not
>sealed units so, over time, condensation will happen and lead to
>unwanted 'growths' which could reduce efficency.
>
>Neil.
>

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