Extech 11 Function Professional Multimeter

Extech 11 Function Professional Multimeter


The Extech EX420 is an autoranging multimeter with 11 functions and 0.3% basic accuracy.


  • Measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Duty Cycle, Diode Test, and Continuity
  • Type K thermometer built-infor temperature measurements
  • Large backlit display with easy-to-read 1" digits
Your Price
Drop ships from manufacturer

Shipping Information
Return Policy
Why Buy From Fondriest?


The Extech 11 Function Professional Multimeter measures AC/DC voltage, AC/DC current, resistance, capacitance, frequency, duty cycle, diode test, and continuity. The instrument also features a built-in Type K thermometer for temperature measurements. Input fuse protection and mis-connection warnings provide optimal safety for the user. Other features include data hold, auto power off, and a large backlit display with easy-to-read 1" digits.

Notable Specifications:
  • Basic accuracy: ±0.3%
  • AC voltage: 0.1mV to 750V
  • DC voltage: 0.1mV to 1000V
  • AC current: 0.1μA to 20A
  • DC current: 0.1μA to 20A
  • Resistance: 0.1Ω to 40MΩ
  • Capacitance: 0.01nF to 100μF
  • Frequency: 0.001Hz to 10MHz
  • Temperature (type K): -4 to 1382°F(-20 to 750°C)
  • Duty cycle: 0.1% to 99.9%
  • Continuity/diode: yes
  • Dimensions: 7.4x3.2x2"(187x81x50mm)
  • Weight: 0.75lbs (342g)
  • Warranty: 1 year
What's Included:
  • (1) CAT III test leads
  • (1) Multi-position tilt stand and velcrow strap for hanging
  • (1) Protective holster with test lead holder
  • (1) 9V battery
  • (1) Bead wire temperature probe (-22 to 572F/-30 to 300C)
Image Part # Product Description Price Stock Order
Extech 11 Function Professional Multimeter EX420 11 Function True RMS professional multimeter
Drop ships from manufacturer
Extech 11 Function True RMS Professional Multimeter EX420-NIST 11 Function True RMS professional multimeter, includes NIST certificate
Drop ships from manufacturer
Additional Product Information:

Extech 11 Function Professional Multimeter Reviews

| Write a Review

Be the first to write a review

In The News

First Environmental Monitoring System For Baltimore’s Inner Harbor

Baltimore’s Inner Harbor and the rivers that flow into it are important sources of water to Chesapeake Bay, popular recreation sites and the targets of an ambitious clean-up plan. But the city has for some time lacked an environmental monitoring system for tracking water quality in the harbor continuously. That is about to change, thanks to a collaboration between the U.S. Geological Survey (USGS) and Environmental Protection Agency (EPA). It will lead to the new installation of a suite of sensors that will provide the public and scientists with the first comprehensive, real time look at water quality in the harbor.

Read More

Parasite Behind Yellowstone River Fish Kill Found In Other Rivers

A parasite that caused a massive fish kill in Montana’s Yellowstone River has been found in at least seven other rivers in the state, according to the Bozeman Daily Chronicle . Scientists with the Montana Fish, Wildlife and Parks department made the find. So far, the parasite has been confirmed in the upper and lower Madison, East Gallatin, Bighorn, Stillwater, and Boulder Rivers. It had already been confirmed in the Jefferson and Shields Rivers. The microscopic parasite causes proliferative kidney disease, one of the most serious diseases to impact whitefish and trout. The effect of the disease on Yellowstone’s fish populations is exacerbated by other stressors like near-record low flows, consistent high temperatures and the disturbance caused by recreational activities.

Read More

ESPniagara Tracks Algal Toxins In Lake Erie, Protects Drinking Water

It may have taken 20 years and $20 million to develop, but Lake Erie researchers working to fight harmful algal blooms (HABs) now have a new tool to safeguard drinking water: ESPniagara. The advanced sampler has been called a “lab in a can” for its ability to sample microcystins, the most common algal toxin these days, in almost real time. The big gadget’s name is a mashup between “ESP,” for environmental sample processor, and the name of Admiral Oliver Hazard Perry’s ship during the War of 1812. “We wanted to name it something that was significant to Lake Erie,” said Tim Davis, molecular biologist and lead HABs researcher at the National Oceanic and Atmospheric Administration’s Great Lakes Environmental Research Lab (NOAA GLERL) in Ann Arbor, Mich.

Read More