NCU PA line monitoring module is designed to monitor earth faults and short circuits, as well as to monitor resistance and line break of 100 V loudspeakers.
To perform all product functions, at least one NCU-REL relay module must be connected to the NCU. Depending on the number of connected NCU-REL relay modules, up to 32 loudspeaker lines can be monitored. Maximum number of NCU-REL relay modules connected to the NCU is 8 pcs.
NCU PA line monitoring module is used in public address systems in metallurgical, chemical, oil refining, gas and oil-producing industries and similar to them in terms of application, as well as on transport.