Matrix 424, 832, 832+ Installation Manual
RINS918-6 Page 31
2.12.5 Zone Doubling to Matrix
NOTE: Up to 64 zones can be programmed when using Zone Doubling on MX 832/832+
The Zone Doubling Map:
Control Panel: Zones 1-8 / Zones 17-24
Plug On Expander: Zones 9-16 / Zones 25-32
RIX1: Zones 33-40 / Zones 49-56
RIX2: Zones 41-48 / Zones 57-64
Spare