I have a neighbor 1/2 mile away who appeared to have the same thing.
When I went to check it out, I found a porch light with decorative
glass panels. The one panel was acting as a prism sending green light
in my direction. When at the house, it looked like a perfectly normal
porch light. From my house 1/2 mile away, I could walk back and forth
50 feet and see it change from green to purple. This was all around
Christmas time, so I started off thinking it was a decoration.
Many GFI outlets have a green LED to indicate the outlet is live and has
not tripped. When I have the cover on my outdoor outlet flipped up the
LED, viewed on-axis, is quite bright even in daytime. Maybe the neighbor
has an outlet that should be covered.
Motion sensors usually have a red lamp that comes on when, well, motion
Could be a GFI as prev mentioned. Could be a flat panel LCD night
light. Could be a detector to see if his wife is stepping out on
him. Could be a radioactive glow from too much work at the nuke
Best bet. Go return the rake you borrowed last fall and while your
doing so, ask him.
They're several houses down - don't know them. It'd be weird "hey what's that
I think the GCFI indicator LED is probably the answer. The side of their house
pretty much points directly to my front door (curve in the street). One night I
noticed a bright green light, that's all.
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