Control your home’s heating and cooling from anywhere.
The FM radio band (88-108 MHz) lies just below the Civil Aviation Band (108-138 MHz), which is used for air traffic control, air shows, and other ground-to-air communications.
Only you know how to make this nifty magic gadget light up.
Make a lockable carry-all box from sheet metal.
An electric field can excite phosphorescent materials to glow; that’s the principle of electro-luminescence.