Product Details
3.7 out of 5 stars with 50 reviews

Extech EX430 True RMS Autoranging Multimeter


List Price
$96.27
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$71.24
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Economical True RMS multimeter features 11 functions, including capacitance, frequency and duty cycle, displayed on a large backlit screen. Features ±0.3% basic accuracy and also has built-in Type K thermometer. Compact and powerful, the Extech EX430 11-Function True RMS Professional MultiMeter provides the versatility of multiple meters in one convenient device. The EX430 measures AC/DC voltage and current, resistance, diode, continuity, frequency, and temperance. It also includes a True RMS function to ensure accurate AC voltage and current measurements without distortion from electronic devices. A large, backlit display and 1-inch high digits allow for easy reading, while the ergonomically designed housing offers comfortable, one-handed operation.

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11 Function True RMS Professional MultiMeter
At a Glance:
  • Accurately performs 11 basic and advanced measurements

  • True RMS capability corrects for distortion from electronic devices

  • Lightweight and ergonomically designed for comfortable one-handed operation

  • Large, high-contrast LED display with 1-inch numbers is easy to read

  • Type K bead wire temperature probe for surface or air measurements

  • Three-year limited warranty on parts and labor
At a Glance
Extech EX430 11 Function True RMS Professional MultiMeter
Performs 11 basic and advanced measurements with +/-0.5 percent basic accuracy. View larger.
11 Functions in One Convenient Meter
This tool offers multiple functions that allows the professional worker to carry one meter into the field instead of several. The autoranging EX430 measures AC/DC voltage, AC/DC current, resistance, diode, continuity, capacitance, and frequency, all with +/-0.5 percent basic accuracy. This unit has a low current capability, measuring down to 0.1uA, and features input fuse protection and mis-connection warnings. A Type K thermometer is built in for surface or air temperature measurements.

CAT III test leads are included. And for greater convenience, the unit comes with a multi-position tilt stand, a Velcro strap for hanging, and a protective holster with handy test lead holder.

True RMS Prevents Distortion from Electronic Devices
It can be very difficult to make accurate current and voltage readings in industrial and commercial applications when electronic devices are present. Fluorescent lights, motor drives, computer power supplies, and other electronic systems can distort the AC waveform, making it hard for averaging meters to get an accurate read. True RMS uses a more advanced formula to compensate for this kind of distortion.

Large, Backlit LCD Screen For Easy Reading
Readings on the EX430 are displayed on large, backlit LCD screen with easy-to-read, 1-inch-tall digits. The 2,000-count screen offers high resolution over wide ranges, and features data hold. To preserve your batteries, the unit has auto power-off.

Compact, Ergonomic Design for Comfortable Handling
The EX430 is ergonomically designed and weighs less than 1 pound, so it offers a comfortable grip for one-handed operation. It measures a slim 7-2/5 by 3-1/5 by 2 inches (H x W x D), and uses one 9-volt battery.

Warranty Information
The Extech EX430 11-Function Professional MultiMeter is backed by a manufacturer's three-year limited warranty on parts and labor.

What's in the Box
Multimeter, CAT III test leads, stand, hanging strap, holster with built-in test lead storage, Type K bead wire temperature probe, battery, and owner manual.


  • Advanced measurements include Capacitance, Frequency, and Duty Cycle

  • Relative function for establishing a base line reference

  • True RMS AC measurements

  • Type K thermometer built-in for surface or air temperature measurements

  • Input fuse protection and mis-connection warnings with audible and visible signals

Product Information   Specifications for Extech EX430 True RMS Autoranging Multimeter Below:

Manufacturer Extech Instruments
Brand Extech
Color Multicolor
Model EX430
SKU 334452
UPC 745654951376
Item Weight 0.75 pounds
Item Size 3.2 x 2 x 2 inches
Package Weight 1.45 pounds
Package Size 8 x 3.3 x 3.3 inches
Units in Package 1

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