Currently available only as a Factory Assembled Unit!

Kit makes an a touch sensitive alarm circuit. Loop a wire from the circuit onto a door kob or other metal object. When it is touched it will set off the on circuit board alarm sound. Could be a handy device to have in a hotel room or where you need a touch alarm.

Circuit board is 2.6" x 1.9:
Piezo speaker included on circuit board

Cricuit operates on 9 volts DC

Another great kit to have fun with from Bakatronics

Have fun, that's what it's all about. 

Video of Ghost Detector using FK507 kit from Bakatronics.com

https://www.youtube.com/watch?v=QQ_Bd5axKcU