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4� When the signal of weak electromagnetic field is sensed, the character “- - L” is
displayed, the buzzer emits a slow beep sound and the green LED indicator light is on�
5. When the signal of strong electromagnetic eld is sensed, the character “- - H” is
displayed, the buzzer emits a quick beep sound and the red LED indicator light is on� In
general, it means the tested wire is live wire�
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