5. No person may use electrodes to stun an animal individually unless the apparatus—
(a)incorporates a device which—
(i)measures the impedance of the load; and
(ii)prevents operation of the apparatus unless a current can be passed which is sufficient to render an animal of the species being stunned unconscious until it is dead;
(b)incorporates an audible or visible device indicating the length of time of its application to an animal; and
(c)is connected to a device indicating the voltage and the current under load, positioned so as to be clearly visible to the operator.