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Electrostatic Warning Ring
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一款静电预警指环，遇到静电会发光指示。需要具备一点点动手能力，内部结构为氖管或led灯串联一个电阻即可，手环正面与背面均安装5MM直径吸铁石与其相连。 使用一根iPhone数据线模拟静电，接触表面吸铁石，LED灯就会发光，特别适合干燥寒冷的北方朋友为我助力好玩就为我助力一下吧
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