Bスイッチ

ビースイッチbiisuitchi

noun

  1. simple on-off switch
  2. one-way switch (UK)
  3. two-way switch (US)

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences