Access Control Extension Panel (Up to 4 Doors)Door Controller Extension (4 Door) Part# MAC 004 CE Control 4 doors and managed by the easy to use Malibu access control module. Note: Must have the 4 Door Controller with Module (MAC 004 CM) to use this extension. The 4 Door Controller with Module controls the first 4 doors and this extension allows you to add 4 additional doors either in the same or different location. (Additional multiples of 4 doors require an extension for each set.) Each door