AC Line Monitor/Polarity Tester

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Manufacturer's Number: 12-4058
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Make sure you are operating your appliance within the safe operating range of 110 to 130 VAC. Easy to read digital display constantly shows outlet voltage in one volt increments. Built in tester alerts you to any polarity problems. LED display indicates if there is reversed polarity, open neutral or open ground. 1 per card.
WARNING: This product may contain one or more chemicals known in the State of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit