Ibhodi lomshini we-Mitsubishi elevator door DOR-1231A DOR-1231B DOR-1321A liyingxenye yesistimu yokulawula umnyango wekheshi. Ngokuvamile kuhlanganisa amabhodi wesifunda, izinzwa, abashayeli bezimoto nezinye izingxenye zokulawula ukuvulwa nokuvala, isivinini kanye nemisebenzi yokuphepha yomnyango we-elevator.Lezi zigaba zinesibopho sokuqinisekisa ukusebenza kahle nokusebenza okuphephile kweminyango ye-elevator..
I-DOR-1231 inqanyuliwe futhi imodeli ithuthukiselwe ku-DOR-1321 ngemisebenzi efanayo.