Unfortunately, some grounded outlets only power devices with two prong plugs. In case you need to power equipment with a plug with 3 prongs, this 2pc pack adapter is the most logical solution. Best used for plugging in power extension cords, holiday decorations and battery backups.
Included is 2 pieces that each have one-three pronged outlet. 3-Prong to 2-Prong Adapter is UL approved with an electrical rating of 125V/15A, and comes with a lifetime warranty.