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 downloadable plans (also available as paper plans), requiring parts and assembly.
Also available as a kit with plans and all parts included, requiring assembly.
Or fully assembled and ready to use.