When a physical barrier, such as a wall or a fence, is combined with an electric fence it will deter attempts to infiltrate the protected perimeter. The electric fence delivers a high-voltage shock that is non-lethal but memorable to the potential intruder. The Nemtek electric fence energizer has a detecting feature which produces an alarm when the protected perimeter has been breached or tampered with. By using an electric fence, the attempted break-in of the protected area can be delayed, giving additional time for a reaction team to respond to the breach.