This powerpoint tester and adapter are for use with Type B earthed powerpoints in USA, Canada, Japan, Philippines, Taiwan, Thailand, USA and other countries with a type B powerpoints.
For surety, we recommend that you test your powerpoint is correctly earthed before using your earthing product in some of the above countries.
Plug the tester in and watch for the pattern in the lights (the centre and right lights come on when wired correctly).
Then plug your adapter directly into the lower round 3rd earth port.
Better Earthing adapters are custom-made and have a built-in 10,000 Ohm safety resistor suited for earthing (in addition to the safety resistor that is fitted inside of our Better Earthing leads).
This adapter can be used to connect two products or one product and a testing multimeter.