Why the clamp jaw with hall component (a clamp meter which can be used to test AC/DC current) keeps buzzing when switching from AC gear to DC gear? Why the reading can not be reset? - UNI-T Meters

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Why the clamp jaw with hall component (a clamp meter which can be used to test AC/DC current) keeps buzzing when switching from AC gear to DC gear? Why the reading can not be reset?

The common cause is that the hall component is damaged, it is recommended to send the product to manufacturer for maintenance.

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