Trombon VP-P Call Panel for Effective Two-Way Fire Alarm Communication

Call panel "Trombon VP-P" (hereinafter referred to as VP) is installed in the fire alarm zone and is designed to organise two-way voice communication with the block-selector "Trombon BS-16", installed at the post-dispatch room. Power supply of the fire alarm system is carried out through the communication line from the selector unit. On one zone block-selector "Trombon BS-16" can connect one main call panel and one duplicate call panel.