French experiments Young detective. Lie detector

Build your lie detector, get acquainted with the principle of its operation and find out what a polygraph is and where it is used.
Set Contents: Screw and washer 3 pieces, printed circuit board, small round head screw 8 pieces, switch,... regulator, switch lever, wires with sensors, battery cover, panel, base, top cover, screwdriver, sticker, instructions.
Additionally, you will need 2 AA batteries (not included in the set).
The set comes with illustrated instructions.