We picked up one of these battery powered LED strobe lights they were selling for Halloween. They were selling at the dollar store for $5 before Halloween and now were marked down to $2.
Basically they are just a bright LED flashlight that has variable speed flashing, and has adjustible speed by turning a knob. It came with the batteries included, which requires removing a tiny screw to get to the batteries.
While trying to determine what size batteries it uses by reading the box, I found most of the writing on the box is a disclaimer which consists of a lengthy paragraph. To summarize it, it says "Complies with FCC rules and is designed to not cause tv or radio interference. Then it goes on to say that if it does cause interference, "relocate it".
**** [Now for the DUMMY PART] ****If it still interferes, "Connect it to an outlet on a circuit different from that to which the receiver is connected"......
WTF ????? It's BATTERY OPERATED! How can I plug it into a different outlet???