MMI-6SF | Gamewell-FCI Six-Zone Interface Module for E3 and S3 Series Fire Alarm SystemsDescription The Gamewell FCI MMI 6SF Multi Mod Six Zone Interface Module provides an efficient way to expand and manage multiple initiating circuits within an addressable fire alarm system. Designed for E3 Series and S3 Series systems, it supports up to six Class B or three Class A input circuits for versatile field wiring. This module enables seamless integration and reliable zone monitoring in commercial and institutional fire safety applications.