Non-Contact Voltage Detector with Adjustable Sensitivity
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DescriçãoThe HHM-NVC40 provides a safe non-contact way to check whether an electric line or cable or AC outlet is “hot” (energized). It does so by sensing from a short distance the electromagnetic field created by AC voltage. Even unloaded AC circuits generate electromagnetic fields. Although these fields are extremely weak, their constantly changing nature means that they generate some current.