Mobile Expander is add-on module to Yacht Router with mobile network modem. It will provide Yacht Router connection to mobile networks (4G/3G/2G). With dual SIM card slot, you can use two SIM cards from same or different mobile provider. For long offshore connectivity (30+ NM) installation of optional high gain outdoor antennas is suggested. Depending on a Yacht Router model it is possible to add multiple Mobile Expanders.