on/off/test button
/ɒlfˈaktəɹi mjuːkˈəʊsə/
n
English · on/off/test button中文 · 开关测试按钮Español · botón de encendido/apagado/testFrançais · bouton marche/arrêt/test
意味：Button that turns on the UPS and begins the procedure of checking the status of the battery.