This product has a backlight display function. When the backlight display button is turned on, the screen will illuminate, so that accurate readings can be made even in poor light conditions.
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The insulation resistance tester comes with a protective case that is shock-proof, dust-proof, and moisture-proof, and is suitable for outdoor working environments.
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When the battery power is low, there will be a low battery indicator on the display, and the batteries should be replaced in time (Note: It is recommended to replace six batteries at the same time).
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