ABT-xCtrLine -4 provides 4 independent speaker line outputs (A, B, C, D). Card allows to switch between main and spare amplifiers. Line measurement methods can be made by: Impedance, Loop or End of Line Module (EOL ).

The measurement method is selected from the sof tware conf iguration. ABT-xCtrLine-4 provides fault detection, opening , ground leakage and surveillance amplifiers on common 100 V Buses.

Morever ABT-xCtrLine -4 is compatible  with MULTIVES Voice Evacuation and Public Address system which is designed with a view to a possibility of its versatile application – it is extremely suitable for both decentralized and centralized systems. The architecture of this system is based on fibre optic Ethernet connections between control units and other elements of the system which allows for its application in structures most extensive in terms of area and functionality such as air terminals, oil fields and refineries, commercial centers and office complexes. The system fully complies with a European mandatory standard EN54-16.