Found the following articles on the topic «mystic»:

It all started with a lantern on the porch. Although everything was understandable, there was a sensor that turns the light on when someone is within range.
Why am I talking about it?
- Because when I came, it was turned off.
True - not always, but sometimes it turned on ... rarely, mostly turned off. Draws attention, even briefly watched - it turns on when others reach the radius of a sensor . When I - it is usually turned off.

From machines that stand at the entrance, often poured off gasoline, so the sensor was removed and the lamp is turned on constantly. But ..