Profile: Air Comm Systems, Inc. specializes in providing custom designed airborne audio systems for use in forestry, law enforcement, emergency medical services, and multi-mission applications. Our custom & standard airborne audio products include audio mixer panels, intercom expansion units , PA/siren systems & external loudspeakers, portable radio adapters & audio accessories & custom communication products and cable harnesses. The ACS 300A is a dual audio mixer panel that provides full transmit, receive audio, and ICS support for a pilot & copilot, and optional ICS support for 6 additional aircraft passengers. It is switch selectable to work in either RH or LH pilot configurations, and is fully plug compatible with its popular predecessor, the ACS 300. It is designed to meet the requirements of the helicopter and fixed wing applications. It is ideal for single & multi-user installations, and is a perfect choice for use in law enforcement, EMS, forestry, and numerous other applications. The ACS PA100F PA/siren system provides up to 100W of PA or siren audio. The system consists of a compact, panel mounted Control unit and a lightweight, remote mounted amplifier. It can be used with any of the external loudspeakers.