A push-button type switch that turns the power source on and off. Pressing the switch turns the power on. Pressing it again turns power off.

　
英 美
  • 按鈕式開(kāi)關(guān)；用以開(kāi)啟或關(guān)閉儀器的總電源.；壓下此開(kāi)關(guān)時(shí)；若電源為開(kāi)啟的狀態(tài)；則再壓一次即為關(guān)閉狀態(tài)；反之亦然
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