My Robo-dog sits unplugged in my garage. I
set mine up inside my garage too, and the
motion sensor on the wall between mine and
my neighbors house, where it was in the
shade all day and no lights on it at
night...the thing would go off with changes
in sun light, like when the sun goes
between clouds, when the wind rustled
leaves on a plant at the neighbors corner.
I put black tape on two sides of the sensor
to limit its field of view to no avail. I
tried two other types of sensors with the
same results...I finally gave up on it as
hopeless.