Not all digital multimeters DMMs are the same Volodymyr Krasyuk/iStock/Thinkstock
<p>Not all digital multimeters (DMMs) are the same.</p>

Live to Test Another Day, Part 2

For industrial or commercial work, it&rsquo;s best to own only CAT IV meters.

Obviously, not all digital multimeters (DMMs) are the same. The wide range of prices tells us that. Then, there are feature differences. For example, as you move up the scale you get high/low/average recording (among other features). An important way DMMs differ is by their energy category.

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