I-opharetha yomnyango we-AT120 inenjini ye-DC, isilawuli, i-transformer, njll., efakwe ngokuqondile kugongolo lomnyango we-aluminium. Injini inegiya lokwehlisa kanye nesishumeki futhi ishayelwa isilawuli. I-transformer inikeza amandla kusilawuli. Isilawuli somshini womnyango we-AT120 singasungula ukuxhumana ne-LCBII/TCB ngamasignali ahlukene, futhi singafinyelela indawo ekahle yokuvula umnyango nokuvala ijika lejubane. Ithembekile kakhulu, kulula ukuyisebenzisa, futhi inokudlidliza okuncane komshini. Ilungele izinhlelo zeminyango ezinobubanzi obucacile bokuvula obungekho ngaphezu kuka-900mm.
Izinzuzo zomkhiqizo(okubili kokugcina kudinga amaseva ahambisanayo ukuze asebenze): ukuzifundela kobubanzi bomnyango, ukuzifundela kwetorque, ukuzifundela kwemoto, ukusebenzelana okusekelwe kumenyu, ukulungiswa kwepharamitha eguquguqukayo esizeni