The Earthing Outlet Checker, tests the electrical outlets (Type I) in your home to verify that they are grounded before using your earthing products.
Type I outlets are used in: American Samoa, Argentina, Australia, China, El Salvador, Fiji, Guatemala, Kiribati, Nauru, New Zealand, Okinawa, Panama, Papua New Guinea, St. Vincent, Tajikistan, Tonga, Uruguay.
Instructions for Outlet Checker
Plug outlet checker into the outlet you are planning to use. If the outlet is properly grounded, you will see all three lights on the outlet checker light up, any other combination of lights indicates the outlet is not properly grounded. If one outlet is not grounded in the home, you might consider testing another outlet. It is possible to have some outlets that are grounded and some that are not in the same home.