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Good hack for controlling your spooky props, or anything that you want "motion sensitive" - "This is a great and inexpensive way to automatically activate haunted effects (pneumatic cylinders, lighting, sound effects, etc.). All you have to do is buy a motion sensor floodlight from your local hardware store for under $20.00 and a couple of adapters. The adapters you need will convert from a screw in light bulb base to a two or three prong plug-in socket (see first two pictures below). Screw the adapters into the motion sensor where you would put the floodlights and plug your accessories into the sockets." - Link.
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