Question: Is there any risk of electric leakage during the use of this product？
Answer: NCV Noncontact security pencil, This product meets the requirements of 600V CAT IV 1000V CAT III, provide you the HIGHEST SECURITY during working, so we don't have to worry about safety at all.
Question: What is the sensitivity of the test pen? It could read 12 and 220v volts?
Answer: Thank you very much. This product It uses AC10 can effectively reduce misjudgment of the line, in case of strong electricity, rapid sound, and light alarm. In addition, the range it can test is DC Voltage to 1000V and AC Voltage to 750V，Do don't worry at all.
Question: I'm bought it, but I'm worried about the quality.
Answer: There is no need to worry about the quality. If there is any quality problem after your purchase, we will refund you for free, and we will bear the cost.
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