• Extech EX503  10 Function Heavy Duty Industrial MultiMeter

Averaging DMM with 4,000 count large LCD display and waterproof housing

The EX503 offers an array of must-have multimeter measurements including capacitance, frequency (dual sensitivity for electrical and electronic applications), diode test and continuity. Other features include Data Hold and Relative Hold, and manual- or auto-ranging modes. The latter automatically adjusts the measurement range based on the detected source such as electrical components and electronic equipment. The meter features 0.5 percent accuracy and a CAT IV-600-volt safety rating, protecting users even on outdoor wiring. Includes EX503 heavy-duty digital multimeter, double-molded test leads, magnetic hanging strap, 9-volt battery, carrying case, and user manual.


  • Averaging DMM with 10 functions and 0.5% basic accuracy
  • AC/DC Voltage & Current, Resistance, Capacitance, Frequency, Duty Cycle, Diode/Continuity
  • Dual sensitivity frequency functions (electrical/electronic)
  • 1000V input protection on all functions
  • 10A max Current
  • Data hold, Relative, Auto power off
  • 4,000 count large backlit LCD
  • Double molded housing for waterproof protection
  • Complete with double molded test leads, magnetic hanging strap, carrying case and 9V battery



Specifications                            Range
Display Counts                           4,000 count
Averaging/True RMS                Averaging
Basic Accuracy                           0.5%
DC/AC Voltage                           0.1mV to 1000VDC
                                                     0.1mV to 1000VAC
DC/AC Current                           0.1μA to 10A
Resistance                                   0.1Ωto 40MΩ
Capacitance                               0.01nF to 100μF
Frequency (electrical)              5Hz to 1kHz
Frequency (electronic)            0.001Hz to 10 MHz
Temperature                             
Duty Cycle                                  0.1 to 99.9%
Diode/Continuity                      Yes
Dimensions                                7.25x3.25x2.25"(184x83x57mm)
Weight                                        12.3oz (349g)

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Extech EX503 10 Function Heavy Duty Industrial MultiMeter