ET-74 communications droids were a first-degree droid model developed by Automata Galactica during the Old Sith Wars era. They were designed to handle communications tasks and coordinate the work of labor droids. Programmed with a mastery of communications systems, data transmission and reception systems, and computer systems and networks, they were able to handle a variety of tasks in multiple industries. Often found on space stations and capital ships, they could temporarily replace crew members by manning the communications and sensor stations for a short time.