RE: MS13 PIR detection through glass?

["White, Peter" <peter.white@xxxxxxxxxxxxx>]

Can you not mount it outside? Mine is, on the ceiling of the porch looking
down.  It gets relatively few false detections, whereas mounting it facing
outward would cause all sorts of triggers, but them my front door is only
about 5mtrs from the pavement, so having sensor effectively facing inwards
was the only workable solution for me.  A more sophisticated (i.e.
expensive) solution would be to mount a webcam or similar covering the
front
door, with movement detection software.   The camera solution would
certainly work better for aliens, as it's not dependant on the target being
warm-blooded.

-----Original Message-----
From: neil_goldsmith [mailto:ngoldsmi@xxxxxxx]
Sent: 23 February 2004 21:40
To: ukha_d@xxxxxxx
Subject: [ukha_d] MS13 PIR detection through glass?


I would like to detect visitors (or alians) at the front door using
an MS13 through the front door glass .... but .... it would seem that
the IR that is needed to trigger the PIR is blocked by the glass
(regular not 'K' or similar) .... any thoughts or suggestions?

Neil.



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