An EVCS is a xed, secure, bi-directional, full duplex voice communication system to assist re ghters during emergencies in high rise buildings or large sites where radio communication cannot be guaranteed to work due to interference from the re corona.

BS5839-9:2011 covers the design, installation and operation of re telephones and disabled refuge systems in buildings, and where both systems are tted to a building, the standard speci es these should form a single system.

The EVX-IPA is a type A EVCS outstation for use in outdoor or exposed areas and is compatible with the EVX standalone and network EVCS systems.

The outstation is supplied within an compact IP65 enclosure which is externally signed as required by Building Regulations Approved Document B. The enclosure is opened by operation of a lever lock, exposing the handset, allowing a call to be made.