Part of our Doc Tesla Action Science Kits™ lineup.
This crazy gimmick is the best joke of the day. Battery operated circuit is hidden in the targets bedroom. As soon as the lights go out it emits a burst of high pitch sonic energy every 10 or 30 seconds or so. When the target turns on the light the circuit deactivates making it impossible to locate.
|These are paper plans, requiring parts and assembly (also available as downloadable plans for roughly half the price). You should be familiar with reading electric schematics, and know how to solder and do basic mechanical assembly.|