How long does the battery in a Friends of Hue light switch last?
Friends of Hue 燈具開關中的電池可持續使用多長的時間？
Friends of Hue smart switches are powered by the kinetic energy generated by pushing their buttons and do not require batteries.
Friends of Hue 智慧開關會在使用者按下其按鈕時收集產生的動能，進而自行供電，所以不需要電池。