Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? A digital multimeter is an indispensable tool for testing, diagnosing, and ...

While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

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The main purpose of a smart meter is to send meter readings to your energy supplier automatically. But there's more you can do with them if you know how. Your smart meter gives you access to detailed ...