Capacitance Meter High accuracy; Low Battery indication; Overload protection; External knob for zero adjustment. Capacitance Meter CM7115ADisplay3 1/2 digits LCD with a Max. Reading of 1999PolarityAutomatic, Positive implied, negative Polarity indicationOver Range(1) or (-1) is displayedMeasurement Rate2 times per sec. nominalOperating Environment0°C to 50°C at <70% relative humidity ...