I am not sure how the "phases" which has been mentioned affects me and the box doesn't stipulate anything about the electrical circuit but it just works and works well, exactly as described on the box.
There are 3 phases in an electricity supply system, in most cases a house is only supplied by a single phase so no problems as these devices can only connect to each other if they are on the same phase.
For more in depth info go to:
3 Phase Electricity - The 3 Phase Power Resource Site