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

BS 5839-9:2021 covers the design, installation and operation of fire telephones and disabled refuge systems in buildings, and where both systems are fitted to a building, the standard specifies these should form a single system.

The EVX-IPB2 is a type B 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 IP66 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 handsfree unit and operating instructions.