Expansion Units
Expands the number of zones on an NC910 or NC920 Call Controller by 10 or 20 zones (dependent on model purchased).
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Description
Below is a list of the part numbers and descriptions of this product range:
NC910ES – 10 Zone Expansion Unit for NC910S or NC920S
NC920ES – 20 Zone Expansion Unit for NC910S or NC920S
NC910EF – 10 Zone Expansion Unit for NC910F or NC920F
NC920EF – 20 Zone Expansion Unit for NC910F or NC920F