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Extech EX420A 11 Function Professional Multimeter

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EX420
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The mid-range model in Extech's EX400 series and the upgraded version of the EX410A and EX411A, this digital multimeter includes the ability to measure 11 different parameters!

Equipped with a large size, backlit LCD screen, large rotary dial for easy test selection, easy access test lead jacks and a rubber protective holster, the Extech EX420A is ready for a wide variety of electrical applications.

This digital multimeter can test AC/DC voltage, AC/DC current, resistance, capacitance, frequency, temperature (using the included probe) and also can be used to test duty cycle, diode and continuity.

Additional features of the EX420A include a relative function and a data hold function which will temporarily freeze current values displayed on the LCD screen.

Extech EX420A 11 Function Professional Multimeter Key Features

  • 11 functions in one meter - ideal for any professional user
  • AC voltage measurement range from 0.1mV to 600V
  • DC voltage measurement range from 0.1mV to 600V
  • AC current measurement range from 0.1μA to 10A
  • DC current measurement range from 0.1μA to 10A
  • Resistance measurement range from 0.1Ω to 40MΩ
  • Capacitance measurement range from 0.01nF to 100μF
  • Frequency measurement range from 0.001Hz to 10MHz
  • Temperature measurement range from -4 to 1382°F (-20 to 750°C)
  • Duty cycle measurements from 0.1 to 99.9%
  • Continuity/diode testing functions
  • Autoranging digital multimeter - automatically selects appropriate range
  • Large size, backlit LCD display with 1" digits
  • Input fuse protection and misconnection warnings

What's Included?

  • Extech EX420A Multimeter
  • CAT III Test Leads
  • Multi-Position Tilt Stand
  • Velcro Strap for Hanging
  • Protective Holster with Test Lead Holder
  • Bead Wire Temperature Probe
  • 9V Battery

The Extech EX400 Series - A Multimeter for Every Application

Extech's EX400 series consists of several different multimeters, each made to fit the needs of professional users. The follows options are available:

Model Number Averaging or True RMS Measurement Functions Manual/Autoranging
EX410A Averaging AC/DC voltage, AC/DC current, resistance, temperature, continuity, diode Manual
EX411A True RMS AC/DC voltage, AC/DC current, resistance, temperature, continuity and diode Manual
EX420A Averaging AC/DC voltage, AC/DC current, resistance, capacitance, frequency, temperature, duty cycle, continuity and diode Auto
EX430A True RMS AC/DC voltage, AC/DC current, resistance, capacitance, frequency, temperature, duty cycle, continuity and diode + relative function Auto
EX470A True RMS AC/DC voltage, AC/DC current, resistance, capacitance, frequency, temperature, duty cycle, continuity and diode, relative function and built-in IR thermometer Auto
Accessories related to this product:
  1. Extech TL807C Insulated Alligator Clips
    £5.53 £4.61
  2. Extech TL726 Double Molded Silicone Test Lead Set
    £13.08 £10.90
  3. Extech TL806 Double Insulated Alligator Clips
    Discontinued
  4. Extech TL708 Heavy Duty Large Alligator Clips
    £15.42 £12.85
  5. Extech TL748 Spring Loaded Hook Tip Probes1
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  6. Extech TP873 Bead Wire Type K Temperature Probe 22 to 572F
    £13.88 £11.57
  7. Extech TL740 Industrial Plunger Style Test Clip Set 1
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Part CodeEX420A

Extech EX400 Series Technical Specifications

Model NumberEX410AEX411AEX420AEX430AEX470A
Temperature (Infrared) - - - - -50 to 270°C (58 to 518°F)
Averaging/True RMS Averaging True RMS Averaging True RMS True RMS
Basic Accuracy (DC V) ±0.5% ±0.3% ±0.3% ±0.3% ±0.3%
AC Voltage 1mV to 600V 1mV to 600V 0.1mV to 600V 0.1mV to 600V 0.1mV to 600V
DC Voltage 0.1mV to 600V 0.1mV to 600V 0.1mV to 600V 0.1mV to 600V 0.1mV to 600V
AC Current 0.1mA to 10A 0.1mA to 10A 0.1μA to 10A 0.1μA to 10A 0.1μA to 10A
DC Current 0.1μA to 10A 0.1μA to 10A 0.1μA to 10A 0.1μA to 10A 0.1μA to 10A
Resistance 0.1Ω to 20MΩ 0.1Ω to 20MΩ 0.1Ω to 40MΩ 0.1Ω to 40MΩ 0.1Ω to 40MΩ
Capacitance - - 0.01nF to 100μF 0.01nF to 100μF 0.01nF to 100μF
Frequency - - 0.001Hz to 10MHz 0.001Hz to 10MHz 0.001Hz to 10MHz
Temperature (Type K) -4 to 1382°F (-20 to 750°C) -4 to 1382°F (-20 to 750°C) -4 to 1382°F (-20 to 750°C) -4 to 1382°F (-20 to 750°C) -4 to 1382°F (-20 to 750°C)
Duty Cycle - - 0.1 to 99.9% 0.1 to 99.9% 0.1 to 99.9%
Diode/Continuity Tests Yes Yes Yes Yes Yes
Dimensions 187 x 81 x 50mm 187 x 81 x 50mm 187 x 81 x 50mm 187 x 81 x 50mm 187 x 81 x 50mm
Weight 342g 342g 342g 342g 342g
Warranty 1 year 1 year 1 year 3 years 3 years
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