Plus-X Integrated Input Unit: connects 16 metering and 16 status inputs to an ARC Plus over your LAN or WAN. Add up to 16 IIUs to one ARC Plus for 256 metering and 256 status channels.
Because it links over Ethernet, the IIU can sit in another rack, another building or another location entirely, close to the equipment it monitors. That eliminates long runs of parallel site wiring and lets existing ARC Plus units cover additional sites wherever IP access is available.