C-Tec NC910EF 800 Series 10 Zone Expansion Unit For NC910F or NC920F – Flush Mounting

Description

C-Tec NC910EF 800 Series 10 Zone Expansion Unit – Flush Mounting The NC910EF is a 10 zone expansion unit for use with the C-Tec 800 series NC910F or NC920F call controllers.  This part adds an additional 10 zones to existing call controllers.