Display format: if <10A display such as: 1.00A ; if <100A such as: 10.0A ; if ≥100A display such as: 100A. Display format: if <100V display such as : 80.0V ; if >100V display such as : 220V. Step 1: Long press button(about 3 seconds) until the digits on the screen start flashes, then release the button.
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