VAC/C  is a system manager combine with an audio input, audio output unit, matrix, DSP, speaker line controller and network switch in one device. Flexibility of this CU allows for optimization of both equipment and costs of operation in both minor and major structures as well as scattered groups of buildings. While working in the network system and when losing connection with a superior unit VAC/C is able to carry out Evacuation scenarios independently thanks to the locally recorded configuration. 

VAC/C control unit distributes audio signals to individual zones and supervises the correctness of the functioning of individual zones. It also controls the condition of a loudspeaker line and amplifiers. It detects and signals defects and insets a backup amplifier with the help of a changeover module. VAC can be equipped also with an LCD colour and touch display that gives a direct access to the managerial function and monitoring of the whole system – in this way, we obtain additional configuration.

VAC/C is a full digital controller and EN54 Approved for public address (PA), Voice alarm and background music system. It can stand alone control the complete system and inquiry the status through its 4.3” colourful touch screen, from another side the Pc with software enable to customized program control automatic zone & equipment monitor and management. The programmable control input and output could be interactive with AV alarm module or other third-party low-voltage security system.

Microphone inputs are connected via RJ45 connections using 0dBu balanced analogue audio works on CAN bus communication. To provide maximum security of operation, normally assigned to Fireman's microphones can implement CU hardware bypass to ensure continued all-call microphone operation even if the matrix DSP or CPU have failed. A full range of audio processing is available within the VAC/C. DSP-based 24-bit / 48kHz audio functions includes input dynamics processing, individually adjustable digital output delay of up to 5 seconds and parametric equalization.