What is the difference between Master and secondary outlet module?
The Master is intended to be used for the Main incoming telephone connection into the dwelling. The Secondary point is for all other telephone points within the dwelling that are linked to the Master. So in theory you would generally only have one Master and could have several secondary outlets. The products designs are very similar, however the Master socket has a capacitor which the secondary socket does not have.
Date published: 2016-08-27