Power Wizard, FP4500XRC, FarmPro Fence Energizer w/ Voltmeter & Current Meter, 110VFarmPro Ultra Low Impedance Plug-in Electric Fence Energizer with Output & LED, 110VCombined Voltmeter and Current Meter for the Rapid Location of Electric Fence Faults. Also Includes Energizer Remote Control Technology!Features:On/Off button powers energizer up or down anywhere on the fence lineSingle point of remote to fence line contact for fault finder and remote functions9 channel settings for paring multiple energizersLarge LCD screen displays fence voltage reading or current readingUse fault finder functions with any brand of pulse energizerCordless design - no ground probe requiredImpact and water-resistant case with integrated belt clipLow battery warning system9V battery sold separatelyHow do you use the reading to find a fault on the fence?2 Types of Fence ConfigurationsType 1: Fence does not loop back to the Energizer - When using the Fault Finder in a non-looping fence, the current arrow direction is not needed to determine the location of the fault, and can be ignored.Type 2: Fence loops back to the Energizer - When using the Fault Finder with a fence that loops back to the Energizer, the current arrows are used to determine the location of the fault. In normal conditions, as you test along a fence with no loops or faults, the fence current will decrease the farther you are from the Energizer.If you have a fence with one or more major faults, as you test along the fence there will be excess amounts of current on the fence. As you pass the point of the fault, the current will rapidly drop. At this point simply go backwards on the fence and find the exact point, where, on each side, there is the large change in current. This is where your fault is located.With a fence with loops and faults, as you test along the fence the current will point in the direction of the current and as you pass the point of the fault the current direction will change. At this point simply go backwards on the fence and find the exact point, where, on each side, there is a change in the direction of the current. This is where your fault is located.