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The Fluke 79 III Digital Multimeter has all ranges protected against overloads: voltages to 1000V dc, 1000V ac; resistance to 1000 V. All current inputs are protected with high energy fuses - including the 10 amp range. Specifications. DC Voltage Ranges: 40.00 mV, 400.0 mV, 4.000V, 40.00V, 400.0V, 1000V. DC Voltage Maximum Resolution: 0.01 mV. DC Voltage Accuracy: ± (0.3% reading + 1) @ 4.000 V. AC Voltage Ranges (45 Hz to 1 kHz): 400.0 mV, 4.000 V, 40.00 V, 400.0 V, 1000 V. AC Voltage Maximum Resolution: 0.1 mV. AC Voltage Accuracy: ± (1.9% reading + 4) @ 400 mV. DC Current Ranges: 4.000 mA, 40.00 mA, 4 A, 10.00 A. DC Current Maximum Resolution: 0.001 mA. DC Current Accuracy: ±(1.5% + 4) @ 4.000 mA. AC Current Ranges (45 Hz to 1 kHz): 4.000 mA, 40.00 mA, 4 A, 10.00 A. AC Current Maximum Resolution: 0.001 mA. AC Current Accuracy: ±(0.5% + 5) @ 4.000 mA. Resistance Ranges: 400.0, 4.000 k, 40.00 k, 400.0 k, 4.000 M, 40.00 M ohm. Resistance Maximum Resolution: 0.1 ohm. Resistance Accuracy: ± (0.4% reading + 2 digits) @ 400 ohm. Frequency Counter: 1.0 Hz to 20 kHz. Diode Range: 2.450 V. Display Digital: 4000 counts, updates 4/sec. Display Analog: 63 segments, updates 40/sec. Display Frequency: 9,999 counts. Display Capacitance: 9,999 counts. Response Time of Digital Display: VAC <1.5 s (for upscale only), VDC <1 s, ohms <1 s to 40 kohms, <2 s to 4 Mohms, <10 s to 40 Mohms.
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