X9240 WiFi MODBUS TCP/IP Radio Ethernet Modem Radio Ethernet X9240 Modems enable access to any serial equipment from Windows, Unix & Linux computers connected to your wireless TCP/IP network. The X9240 Radio Ethernet Modem also enables communication between two distant serial equipments through a network, or directly with a peer to peer connection (AD-Hoc mode). The X9240 even allows you to build a wireless serial MODBUS to MODBUS/TCP gateway