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Advanced socket tester with loop and RCD check functions; Detects good plus 18 wiring fault conditions; Bright, long life LED's give clear visual indication Buy SOK36 - Socket & See - 230V Professional Earth Loop, RCD and Mains Socket Tester - 13A at CPC. order SOK36 now! great prices with fast delivery onSOCKET. &SEE. Your Guide to Easy. Socket Outlet Testing and instructions for use of. SOK 34 and. SOK 36. Miniature. Loop Testers. Socket See Sok36 Manual. Manufacturer Socket & See; Description Socket & See SOK36 Professional Socket Tester; Save File ? Download Datasheet. A SOK 36 Professional Socket, Earth Loop, Polarity & RCD Tester is an ideal accessory for any PAT Tester. It is designed to identify a variety of faults The Socket & See SOK36 is a Professional Socket/Earth Loop/Polarity/RCD Tester. Features: Bright LED's out perform fragile old style neons; Logical `Green for