The counter is provided with a reset switch. This instrument is designed with the modern state of art technology incorporating LSI Electronic Digital circuitry. The chamber for the animal is made out of clear Perspex sheet fitted with grill of nickel plated brass rods placed 3/16" apart. An in built variable shock arrangement of strength 100v, 50ma is provided in the instrument. Also a four digit counter is provided which counts the movement of the animal, inside the Perspex chamber.