The Brookhouse line of multiplexers combine multiple NMEA talkers into one coherent stream, which can then be listened to by other ship-board electronics and/or a laptop. There are several unique and useful features, including a USB connection option for ease of connecting a laptop, and a Seatalk interface option for connecting to Raymarine instruments. I also particularly like the option of a small LCD screen that can display information from almost any data source in the system. Not only is this a great repeater for instruments you might not have the space or budget for at the nav station, it could be a useful diagnostic tool to determine if a particular device in your system is working. Another interesting feature is the ability to program the device to automatically translate NMEA sentences in order to fix specific compatibility problems with devices in your system.