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Extech EX420
Autoranging Digital MultiMeter with Temperature Function

  • Averaging DMM with 11 functions and 0.3% basic accuracy
  • AC/DC Voltage & Current, Resistance, Capacitance, Frequency, Temperature, Diode/Continuity, Duty Cycle
  • Input fuse protection and mis-connection warning
  • 20A max Current
  • Type K temperature measurements
  • Data hold, Relative, Auto power off
  • Large-digit backlit LCD
  • Available in alternate configurations:
    • EX410 - Manual Ranging, Type K Temperature
    • EX411 - Manual Ranging, True RMS, Type K Temperature
    • EX430 - Autoranging, True RMS, Capacitance, Frequency, Type K Temperature
    • EX450 - Autoranging, IR Temperature
    • EX470 - Autoranging, Type K & IR Temperature, True RMS, Capacitance, Frequency
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Extech EX420
Product Information
Datasheet 496 KB
Manual 675 KB
PDF HelpPDF Help
Specification
Basic Accuracy (VDC) ±0.3%
AC Voltage 1mV to 750V
DC Voltage 0.1mV to 1000V
AC Current 0.1mA to 20A
DC Current 0.1μA to 20A
Resistance 0.1Ω to 20MΩ
Temperature (Type K) -4 to 1382°F
(-20 to 750°C)
Capacitance 0.01nF to 100μF
Frequency 0.001Hz to 10MHz
Duty Cycle 0.1% to 99.9%
Continuity / Diode yes
Warranty 1 year
Ordering Information
Model Description Buy Online Price
EX420 Extech EX420 Autoranging Digital Multimeter Buy Now Sale $60.74
(Reg. $74.99)
EX420-NIST Extech EX420-NIST Autoranging DMM with NIST Buy Now Sale $130.49
(Reg. $149.99)
Optional Configurations
EX410 Extech EX410 Manual Ranging Digital Multimeter Buy Now Sale $41.99
(Reg. $49.99)
EX410-NIST Extech EX410-NIST Manual Ranging DMM with NIST Buy Now Sale $108.74
(Reg. $124.99)
EX411 Extech EX411 True RMS Manual Ranging Digital Multimeter Buy Now Sale $51.13
(Reg. $74.99)
EX411-NIST Extech EX411-NIST True RMS Manual Ranging DMM with NIST Buy Now Sale $130.49
(Reg. $149.99)
EX430 Extech EX430 True RMS Autoranging Digital Multimeter Buy Now Sale $78.84
(Reg. $94.99)
EX430-NIST Extech EX430-NIST True RMS Autoranging DMM with NIST Buy Now Sale $147.89
(Reg. $169.99)
EX470 Extech EX470 True RMS Digital Multimeter with Built-In IR Thermal Laser Buy Now Sale $97.49
(Reg. $149.99)
EX470-NISTL Extech EX470-NISTL, EX470 with Limited NIST - No IR Function Buy Now $224.99
Included Accessories
 
  • 1 - Set of CAT III Test Leads
  • 1 - Tilt stand
  • 1 - Protective holster
  • 1 - Velcro hanging strap
  • 1 - Type K bead wire temp probe
  • 1 - 9V battery
Included
Optional Accessories
CA500Extech CA500 Medium Carrying Case Buy NowSale $17.39
(Reg. $19.99)
TP873Extech TP873 Bead Wire Temperature Probe Buy NowSale $10.87
(Reg. $15.99)
HG500Extech HG500 Magnetic Hanging Strap For Extech EX500 Series Multimeters Buy NowSale $7.89
(Reg. $9.99)

*NOTE: Items ordered with optional NIST calibration will require
approximately 10 days to complete the certification.