Arduino compatible web server based relay card which also can be used with USB or serial connection. No special soldering skills required. Easy programming with popular ENC28J60 Ethernet controller. All Arduino Ethernet libraries are compatible e.g. this ENC28J60 library. Only one +5V supply needed. All relays can be controlled individually. Relays can drive 5A load from 230V.
Board uses FTDI USB module. Arduino bootloader natively supports USB and virtual serial port. This device is programmable via USB port with Arduino IDE or similar programs.