Jisho

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かいへいき 開閉器
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Noun
1. switch​Electricity, elec. eng., See also スイッチ
Wikipedia definition
2. Switch​In electronics, a switch is an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another. The most familiar form of switch is a manually operated electromechanical device with one or more sets of electrical contacts, which are connected to external circuits.
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