An auto-injector comprising: an outer housing (212, 214) having a proximal end and a distal end; an inner housing, a cartridge located within said inner housing, said cartridge containing a medicament, said cartridge having one end thereof sealed by a pierceable member; a needle hub, said needle hub having first and second piercing tips, said first and second piercing tips being in fluid communication; a plunger rod to move said cartridge so as to be pierced by said first piercing tip; an actuating assembly, said actuating assembly being arranged to move an actuator from a first storage position to an activated position wherein said first piercing tip extends outwardly of said outer housing (212, 214) at said proximal end and said second piercing tip pierces said pierceable member; a first trigger being located at said distal end, a second trigger being located at said proximal end, said first trigger being spaced from said actuating assembly such that depression of said first trigger does not activate said actuating assembly, said second trigger, upon being activated, causes said actuating assembly to move to then permit said first trigger to activate said actuating assembly; and a battery, a printed circuit board electrically communicating with said battery, characterized in that the auto-injector further comprises an electrically conductive element having a first end in electric communication with said battery and printed circuit board, a second end within a recess in said plunger rod, said recess being utilized to keep the second end of the electrically conductive member in an electrically insulated location prior to activation, said electrically conductive element being biased outwardly towards a coil spring, said coil spring surrounding said electrically conductive element and being spaced therefrom, the arrangement being such that when said plunger rod is activated, said second end of said electrically conductive element is released from said recess in said plunger rod and contacts a locking ring to complete an electric circuit via said coil spring. an outer housing (212, 214) having a proximal end and a distal end; an inner housing, a cartridge located within said inner housing, said cartridge containing a medicament, said cartridge having one end thereof sealed by a pierceable member; a needle hub, said needle hub having first and second piercing tips, said first and second piercing tips being in fluid communication; a plunger rod to move said cartridge so as to be pierced by said first piercing tip; an actuating assembly, said actuating assembly being arranged to move an actuator from a first storage position to an activated position wherein said first piercing tip extends outwardly of said outer housing (212, 214) at said proximal end and said second piercing tip pierces said pierceable member; a first trigger being located at said distal end, a second trigger being located at said proximal end, said first trigger being spaced from said actuating assembly such that depression of said first trigger does not activate said actuating assembly, said second trigger, upon being activated, causes said actuating assembly to move to then permit said first trigger to activate said actuating assembly; and a battery, a printed circuit board electrically communicating with said battery, characterized in that the auto-injector further comprises an electrically conductive element having a first end in electric communication with said battery and printed circuit board, a second end within a recess in said plunger rod, said recess being utilized to keep the second end of the electrically conductive member in an electrically insulated location prior to activation, said electrically conductive element being biased outwardly towards a coil spring, said coil spring surrounding said electrically conductive element and being spaced therefrom, the arrangement being such that when said plunger rod is activated, said second end of said electrically conductive element is released from said recess in said plunger rod and contacts a locking ring to complete an electric circuit via said coil spring.