Multiplexer interface for data loggers IFC406 allows multiple devices to be connected in a single interface. Each IFC406 allows connecting up to 6 data loggers. It is possible to connect up to 3 IFC406 devices in series to communicate with a total of 18 devices through 1 USB port. To connect several IFC406 Interfaces together, you simply have to join side by side, making sure that the pins are magnetically bonded.