RS232 feem ntau yog siv hauv kev sib txuas lus hauv computer, xws li txuas lub computer mus rau modem lossis lub tshuab luam ntawv. Nws kuj yog siv rau hauv kev lag luam automation, qhov twg nws yog siv los txuas cov sensors thiab lwm yam khoom siv rau kev tswj hwm.
