EVCS – System Expander Panel

The Expander Panel can accept up to eight lines of Outstation (Type A Fixed Phones, Type B Refuge Hands-free Points, Emergency Assist Alarm point or jack points) as required.

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

All Technoswitch Emergency Voice Communications Systems (EVCS) are designed to comply fully with the requirements of BS 5839-9 for use as a Fire Telephone system (FT), Disabled Refuge system (DRS), or as a combined system when both Fire Telephones and Disabled Refuge call points are required.

Download the Data Sheet for Technical Specifications and Ordering Information.

VS-EVS-EX8 Network 8-Line System Expander Panel



EVCS System Expander Panel Datasheet


EVCS Range Brochure

User Guides

Emergency Voice Communications System (EVCS) FAQs
ASSIST CALL Emergency Assist Alarm FAQs


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EVS-EX8 System Expander Installation Commissioning Manual