PA System - A warehouse intercom system, also called a wireless PA system for warehouses, is generally used for trying to get the attention of storehouse workers to give them all a communication or to have one of them call back. To keep from having to run cables each over the storehouse where they can get damaged by all the movement going on, we recommend installing wireless public address( PA) speakers to broadcast a communication to all staff, and also if an individual staff member is demanded, they can walk to wireless intercoms or callboxes spread throughout the storehouse to return the call. Alternately, they can use a handheld radio to respond.