I'm curious if the other end of the wiring comes up out of their toilet, lavatory, or shower.

Personally, I'd pull it up through the washing machine drain to make for a neater installation [Linked Image]

Maybe this is just a new twist on the old M80-down-the-porta-potty-vent trick?
Scenario:
Visitor comes while homeowner is "taking care of business".
Motion detector "sees" visitor, and makes.
Resulting spark ignites methane gas in drainage system.
Result=
Visitor waits 10 min after ringing doorbell while occupant takes a very necessary shower.



[This message has been edited by electure (edited 12-11-2004).]