Mains Tester - latest version from W4. Simply plug into a 13amp socket and the tester will check the following: reversal of live/neutral connections, reversal of live/earth connections, no earth, no neutral, OK. Particularly important for touring on the continent when reversed polarity may be encountered. Specification: 230volt AC. For use in 13amp outlets. ... More Details

Tests AC/DC voltage, DC current, resistance, diode and transformer check. Audible continuity check. Auto polarity and low battery indication. ... More Details