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[message]The master socket contain a surge arrestor and an R/C circuit filter these are used by your service provider to get a fixed value resistance whe...
View full detailsSecondary or extension telephone socket are used to run additional points of the original master socket. Standard BT type socket with screw type...
View full details
Secondary or extension telephone socket are used to run additional points of the original master socket. Standard BT type socket with screw type te...
View full details
The master socket contain a surge arrestor and an R/C circuit filter these are used by your service provider to get a fixed value resistance when t...
View full details
