Imirasire y'izuba itari munsi ya gride ni ubwoko bwigenga bwigenga bwumucyo wumuhanda, ukoresha ingufu zizuba nkisoko nyamukuru yingufu kandi ukabika ingufu muri bateri udahuza numuyoboro gakondo w'amashanyarazi.Ubu bwoko bwurumuri rwumuhanda mubisanzwe bigizwe nizuba, bateri zibika ingufu, amatara ya LED hamwe nubugenzuzi.