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Klein Tools CL390 400A AC/DC Auto-Ranging True RMS Clamp Meter

A 4,000-count True RMS clamp meter that measures AC and DC current to 400 A, voltage to 600 V and DC microamps, with non-contact voltage detection in the jaw and a thermocouple for temperature.

Comes in 2 versions: see which to buy

Pros
Automotive
Solar & batteries

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Klein Tools

1000V max600A max6000 counts

Klein Tools CL710 600A AC/DC Auto-Ranging True RMS Clamp Meter

A 6,000-count True RMS clamp meter that measures AC and DC current to 600 A and voltage to 1000 V, with a low-impedance mode and non-contact voltage detection in the jaw.

Comes in 2 versions: see which to buy

Pros
Automotive
Solar & batteries

See on Amazon View details →

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Klein Tools CL390 400A AC/DC Auto-Ranging True RMS Clamp Meter

Klein Tools CL710 600A AC/DC Auto-Ranging True RMS Clamp Meter