Martindale BZ101 Buzz-it Audible Check Plug

Martindale-13A-Socket-Tester-with-Audible-Warning-Martindale-BZ101-P-Safe-and-simple-to-use-the-BUZZ-IT-from-Martindale-is-a-real-improvement-for-awkward-sockets-It-has-an-audible-signal-to-tell-you-instantly-whether-or-not-the-wiring-is-correct-and-can-also-be-used-as-a-fuse-finder-as-the-correct-fuse-is-located-when-the-buzzer-stops-P-P-If-there-is-a-problem-the-pattern-of-LEDs-indicates-the-fault-Any-results-other-than-three-indicators-lit-and-a-continuous-buzzing-tone-shows-a-f

Price: 20.51 from Rapid Online Rapid Electronics Ltd.