In article ,
Andy Burns writes:
Huge wrote:

nomail wrote:

Some claim to only respond to the thermal image of an object over 30kg -
that's a pretty large dog or moggy!

We have one of those in the garage.
A bat set it off. We had it "adjusted". A bat set it off.

Bats have the ability to get closer to the PIR than a dog down on the
ground, presumably they're quite warm when not roosting?

Bats tend to fly up into corners of rooms (looking for something
they can grab hold of), and that's exactly where PIR's are often
mounted.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]