For the extension of the iSMA controller or as IO module for the bus protocols Modbus RTU/TCP IP and BACnet MSTP/IP. With the iSMA Mix series you have the possibility to extend your control cabinet as you like. iSMA-B-MIX18 Please select variant MIX 18 MIX 18 IP iSMA-B-MIX38 Please select variant MIX 38 MIX 38 IP