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