Federal Signal manufactures loud intercom systems for industrial environments. AudioMaster® and Atkinson Dynamics Intercoms are engineered to deliver dependable performance, maximum flexibility, and extended service life under the harshest conditions. Federal Signal’s intercoms feature wall-mount, two-way, desktop, safe area, and hazardous environment intercoms. Our modular design enables you to specify a system with an unlimited number of stations, customize a system for a variety of environments, and further expand your system in the future.