Lie Detector Game Funny Kit from 9VDC Electronic Circuit Board Electronic Circuit Kit : FA940 This is strictly for funny, the concept to use the principle of reduced skin resistance due to elevated moisture levels. Kit has 2 conductive pads which can detect the drop in the player figures resistance if they are nervous or under pressure when telling a lie. LEDs indicate the relative "stress" that the subject is under. Not to be taken seriously. Note: No battery holder in the package. Technical information: Require 9VDC battery, Current consumption 32mA (Max) Adjust the detecting speed by POT on board PCB Size : 3.03" x 1.75" ** Free shipping Register Airmail & Need the receiver to sign of acknowledge (Except: APO AFO & PO Box.)**