Hoʻohana ʻia nā kukui uila e hōʻike i ka manaʻo o ka mea hoʻokele e wāwahi a huli i nā kaʻa aʻe, a lilo i mea hoʻomanaʻo i nā kaʻa e hiki mai ana. He mea nui lākou i ka palekana alanui a he mea nui ia no nā kaʻa.
ʻO LED he diode emitting-light, kahi semiconductor solid-state device, hiki ke hoʻololi pololei i ka uila i kukui, ʻokoʻa ia i ke kumumanaʻo kukui-kukui o nā kukui uila a me nā kukui uila i kamaʻāina iā mākou. Aia nā LED i nā keu o ka liʻiliʻi liʻiliʻi, ke kūpaʻa vibration, ka mālama ʻana i ka ikehu a me ke ola lōʻihi.