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Punctule May be you can use the “contact us” to contact the banggood customer service team.

2020-03-05 12:03:28 Helpful (0)
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Smellfungus You can try pressing the set button and then powering the meter back to zero. If there is no way to return to zero, there is no way to do this. This is the error range of the normal display.

2019-06-17 10:53:26 Helpful (0)
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