Description Bosch PVA-20CSE PAVIRO Call Station Extension Expanding zone triggering, routing selections, and manual control over large-scale public address networks becomes remarkably efficient using the Bosch PVA-20CSE PAVIRO Call Station Extension. Tailored to attach directly to the main Bosch PVA-15CST call station, this modular keypad extension provides operators with 20 freely programmable soft-touch keys for instant execution of paging commands. Whether you are managing complex zone paging across multi-story commercial centers, directing emergency evacuation protocols in transportation hubs, or routing multi-source audio feeds in educational campuses, the Bosch PVA-20CSE delivers intuitive control, clear visual feedback, and EN 54-16 safety compliance. System integrators and facility managers evaluating the best Bosch PVA-20CSE ...