Mains-Tester-Screwdriver-Multi-Function-Faithfull-FHT-9818-p-The-Faithfull-Multi-Tester-is-more-than-just-a-conventional-voltage-tester-The-built-in-battery-powered-sensor-allows-the-multi-tester-to-perform-a-number-of-different-functions-without-the-need-to-dismantle-a-suspected-faulty-item-or-have-any-contact-with-live-parts-p-p-The-multi-tester-is-fully-insulated-and-is-supplied-complete-with-full-operating-instructions-and-will-perform-the-following-tests-continuity-bulbs-fuse