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NCM-1 Noise Control Module

The Gamewell-FCI, NCM-1 Noise Control Module (patented) is used to reduce the common noise (for example, noise that is present on both conductors) on the Signaling Line Circuit (SLC). The NCM-1 allows the use of untwisted, unshielded wire on the SLC. Applications that have audio or fire fighters’ telephones require the use of twisted/shielded wiring for all circuits including the SLC. The NCM-1 may also be used in these applications to further reduce the common mode noise.

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