ㄎㄞkāiㄍㄨㄢguān

  1. 接通中斷轉換電流設備

  2. 開啟城門關隘楚辭·屈原·離騷》:帝閽開關閶闔。」

power switch, gas valve, to open the city (or frontier)​ gate, to open and close, to switch on and off
interrupteur
Schalter (S)​