System controller redundancy is a typical requirement for voice alarm installations in international airports, railway/metro stations and power plants. In addition, it could also be an optional requirement in large convention centers, shopping malls and universities. All of these applications have one thing in common: full system functionality and the highest system availability is required at all times.
The PRAESENSA “no single point-of-failure” system concept guarantees the highest safety in system operations. To make this concept work on the system control level, you need at least one duty and one redundant controller to ensure all system related functions in the public address and voice alarm solution. Extending the system with controller redundancy can be achieved with a simple and free software upgrade.