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 a clear perspex sheet fitted with grill of nickel-plated brass rods placed 3/16” apart. An build 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. The counter is provided with a reset switch.