The SVM-10's generous memory stores 500 event records and over a years worth of summary data. Graphs, charts and summary reports are easily produced using the included ProVision™ software package. The SVM-10 Stray Voltage Monitor measures and records stray voltage and neutral-to-earth voltages from underground concentric neutrals. The SVM-10 detects neutral-to-earth voltages from 0 to 10VAC with .01V resolution.