UART (TTL) to Ethernet (IEEE802.3 /RJ45) Adapter TCP UDP Srv/Client 3.3V 10Mbps £12.57 to £15.81(£12.57/10g)
UART(TTL) to Ethernet converter TCP/UDP Server/Client RJ45 optional UART-USB2.0 £9.50 to £13.16(£9.50/10g)