SimplexGrinnell's 4003 EC Multi-Function Voice Control Panel is designed for smaller, single buildings that need voice communications capabilities, but not the power and capacity of higher-end voice-enabled control panels. In particular, the panel is well suited for use in school auditoriums, university buildings, churches and other areas of assembly where voice communications are code-required. The panel also meets the United Facilities Criteria (UFC) for military emergency communications applications. The panel can add voice messaging capability to non-voice fire alarm control panels. It can be activated from virtually any fire alarm panel. Multiple 4003EC control panels can also be interconnected using Simplex fire alarm network technology to provide system-wide emergency communications solutions.