Innovative school bell, audio scheduling, paging, emergency notification, and intercom system. BellCommander`s audio scheduler is ideal for factory and school bells with support for unlimited day schedules, multiple zones, and over 200 events per day. BellCommander plays audio through the PC`s sound card, to networked PC`s with the BellCommander client installed, and to network audio players. BellCommander can also control external relays.