Here you can find relevant information, user manuals and support regarding these products:
Duplex R4, Duplex R4Car, Duplex R5, Duplex R6, Duplex R6F, Duplex R6G, Duplex R7, Duplex R8, Duplex R10, Duplex R12, Duplex R14, Duplex R18, Duplex RSat, Duplex Rsat2.