Interface to connect priority audio signals to dSOUND system, either from alarm systems or fire evacuation or from any PA security system. This module allows the emission of priority messages through all speakers of the distributed audio system. Includes connection for activation via NO/NC contact or voltage change (0-12 V DC / 12-0 V DC), audio signal input from security o evacuation system, relay output 12 V DC for activation of other devices and connection for Dsound system. DIN rail mounting (4 modules).