KnightsBridge Screwless Telephone Master Socket Matt White

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. Flawless Screwless design - Master BT type socket - Screw terminals - Screwless low profile design with built in gasket - Certified to BS 5733 - Minimum mounting box depth: 25mmSpecification: Projection (mm): 4.3Min. Mounting Box Depth (mm): 25mmConstruction: Premium grade steelFinish: Matt WhiteIP Rating: IP20Terminal: Screw