The Fluke Model 110, Model 111, and Model 112 are batterypowered, true-RMS multimeters (hereafter "the Meter") with a 6000-count display and a bar graph. This manual applies to all three models. All figures show the Model 112. The Meter measures or tests the following: · AC / DC voltage and current · Resistance · Continuity · Diodes · Voltage and current frequency · Capacitance These meters meet CAT III IEC 61010-1-95 standards. The IEC 61010-1-95 safety standard defines four overvoltage categories (CAT I to IV) based on the magnitude of danger from transient impulses. CAT III meters are designed to protect against transients in fixed-equipment installations at the distribution level