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Attendance Simulator - DIY Home Security System That Casts Shadows on Curtains o

Attendance Simulator - DIY Home Security System That Casts Shadows on Curtains o

$92.99
  • Condition: New
  • Ships from: Denver, US
  • Seller: taswiq (98.2% positive)
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About this item

Prefer windows on upper floors, as shadows can then be seen without the light source itself. Curtains show shadow casts very well because they hang close to the window and can be seen from almost any direction.

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