3-72V and Bidirectional Voltage Testing With 3-72V DC voltage testing range, attach the alligator clamp either to negative or positive ground, red and green light indicates circuits polarity.
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Buzzing Sound Alarm When doing volt testing, one sound buzzing for positive voltage direction and double sound for negative.
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Anti-lost Probe Cover Anti-lost Silica Gel Needle Cover was designed as a part of the spring wire, no worry about losing it during testing or storage.
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140 Inch Long Enough PU Spring Wire High quality 140 inch long enough PU spring wire offers more flexibility, lighter and durable.
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