Knightsbridge Telephone Master Outlet
Description
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 they run line checks. Standard BT type socket with screw type terminals. Rounded edge metal design Master BT type socket Screw terminals Rounded edge design with built in gasket Certified to BS 5733 Minimum mounting box depth: 25mm
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