Two-way communication: The Disabled Refuge System must be readily operated by, and comprehensible to, less able people. Communication between the Refuge Area and the building management is covered by another British Standard; BS5839 part 9, Fire detection and fire alarm systems for buildings – Code of practice for emergency voice communication (EVC) systems. This standard details everything from the intended uses of an EVC system and the style of the outstations. The system must be fully monitored and battery backed. Bartec Fire & Security can design, install and maintain Disabled Refuge Systems, EVC, and Voice Alarms to comply fully with the latest standards.