Wehewehe Pōkole:

ʻO ke kuapo hoʻololi mana pālua o ka hopena-ʻano he hui pū ʻana o ke kuapo a me ka mana logic, me ka ʻole o ka pono no kahi mea hoʻokele hou e hoʻokō maoli i ka hoʻohui electromechanical, me nā hana e like me ka ʻike ʻana i ke uila, ka alapine (frequency), ka pilina kamaʻilio, ka uila, ka mechanical interlock, a me nā mea ʻē aʻe hiki ke hoʻokō i ka mana uila mamao, ka manual ulia pōpilikia.