These UK market 240 volt, mains 4 plug extension blocks are very easy to use and very powerful Just replace an existing block with this one and within minutes be able to dial into it and listen in clarity to what is happening in that roomThey take their power from the mains and therefore are always on and ready for your call.

These units come with a high quality microphone and proper filters to stop the mains back ground noise. As a result these units out perform all others we have tested.