Determined by the number/type of field devices connected to the call controller/system.
Showing 1–9 of 10 results
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Single Zone Call Controller c/w 12V 140mA PSU
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Single Zone Call Controller c/w 12V 250mA PSU
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Stainless Steel Single Zone Call Controller c/w 12V PSU
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Four Zone Call Controller (requires NC930 12V 250mA PSU)
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10 Zone Master Call Controller c/w 300mA PSU (Flush Version)
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10 Zone Master Call Controller c/w 300mA PSU (Surface Version)
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20 Zone Master Call Controller c/w 300mA PSU (Surface Version)
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10-20 Zone Expansion Unit for NC910S or NC920S
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10-20 Zone Expansion Unit for NC910F or NC920F