Accessories included 1 set of:  Earthing instruction’s Socket Tester 18” inch white connector cord (13ft long connector cord) Description: The Green Earthing Extension Cord connects to the end of your Coil Cord, extending the length of your connection to the grounded wall outlet or the Green Earthing Mat. Instructions For Use With A Grounded Wall Outlet:  Insert the prong end of the Earthing Extension Cord into the U.S. Safety Adapter. Plug the U.S. Safety Adapter into the wall. Push the other end of the Earthing Extension Cord into the receiving end of the Earthing Coil Cord. Snap the other end of the Earthing Coil Cord onto your Green Earthing product. Instructions adapter:  This adapter is for TYPE B wall outlets which can be found in: The United States, Canada, Mexico, Costa Rica, and parts of the Caribbean. An Outlet Checker U.S. is included in every greenelectronicsstore.com Kit.Before using your Green Earthing™  product, you must ensure that your Type B three-prong wall outlet and power strip are grounded.Step 1: Test Your Three-Prong Wall OutletPlug the Outlet Checker into the wall outlet or power strip that you'd like to test.Step 2: Two Amber Lights = GroundedWhen the center and right lights are illuminated together, your outlet is properly grounded. You're ready to plug in the Safety Adapter included in your order.Other Light Combinations = Ungrounded and UnsafeTry testing other outlets if the first one needs to be grounded. If you don't have any grounded outlets in your home, then you must order a Green Earthing™  Ground Rod to use your Green Earthing™ product, or call an electrician to fix your outlets.Please Note: If your wall outlets only have two prongs, then there is no Earth/ground present. In this case, you must use a Green Earthing™ Ground Rod or have an electrician come in and ground your outlets.