an on/off switch on the housing and electrically connected to said operational circuitry and to said power source to activate said {TAIL ~ operational circuitry} when said on/off switch is in an on condition and to de activate said operational circuitry when said on/off switch is in {HEAD ~ an off condition}; and 
an on / off switch on the housing and electrically connected to said operational circuitry and to said power source to activate said { TAIL ~ operational circuitry } when said on / off switch is in an on condition and to de activate said operational circuitry when said on / off switch is in { HEAD ~ an off condition } ; and
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