One main communication channelTwo back-up channelsConnection control with ARCEvent messages are transmitted in Contact ID codesInforming customers about events with: Protegus apps, SMS messages6 selectable type inputs: NC, NO, EOL (10kΩ)RS485 connection for connecting iO input and output expanders3 input, 3 double purpose screw terminals for setting either input or output functionalityUsing iO series expanders it is possible to expand number of inputs up to 12