Plug-in mains tester for caravans, campervans, motorhomes, horseboxes etc. This tester is essential for checking that the site supplyin the UK & abroad is correctly wired before hooking-up so that you don't damage expensive electronic equipment. Uses 3 LEDs lit in various configurations to indicate whether there is a problem or that all is OK and is especially useful for checking for reverse polarity that can damage sensitive electronic equipment.
Tests for:
- Live-Neutral reversed
- Live-Earth reversed
- No Earth
- No Neutral
- All OK
