ECU-8 8 Line Master EVC Control Unit (Wall Mounting)c w Line Cards, Handset and Display For disabled reguge and fire telephone applications. Meets and exceeds the requirments of BS5839 part 9 Ideal for diabled refuge, fire telephone and stadium marshall applications Compact 1 8 line (expandable to 16 lines0 wall mounting central controller, saves valuable desk and floor space in crowded control rooms. New network communication card allows up to four master controllers to be interlinked allowing systems