PA/GA System Architecture Design, manufacture and commissioning of voice/alarm broadcast packages The PSC VODEC M Class PA/GA (Public Address and General Alarm System) is the culmination of over 15 years experience in the design, manufacture and commissioning of high integrity voice/alarm broadcast packages for life safety applications. The PA/GA System is specifically developed for use in aggressive operating environments including potentially hazardous atmospheres. PSC VODEC PA/GA is designed to reliably operate for extended periods of time without failure or recourse to routine maintenance. PA/GA has been independently certified to meet the strictest climatic conditions specificed by leading authorities including CE, DNV, CSA, LR. The PA/GA package can be supplied in a number of system architectures: Fully duplicated A+B configuration N+1 Hot-Standby configuration key components are duplicated and configured on Hot-Standby Combination of A+B and N+1 for ultimate system security