electric splitter

hm thx for answer the thingy is called relay and i actually managed to find some tutorials about it but not commercial solution for 220v ( europe)
http://www.ogalik.ee/arduino-and-relay-or-driving-220v-devices-with-arduino/
http://www.glacialwanderer.com/hobbyrobotics/?p=9

what i am trying to find now is commercial sollution like

but for 220v