The system is supplied in separate pre-assembled and tested parts. This watermaker is recommended only in case there is no space on board. This unit can be supplied in the following voltages: 110VAC 60Hz – 230VAC 50Hz – 230VAC 60Hz – 380VAC 50Hz – 440VAC 60Hz. MODBUS protocol standard installed in all units. Compatible with BiBi® and Part-NET Interface.