A cheater plug, AC ground lifter or three-prong to two-prong adapter is an adapter that allows a NEMA 5-15P grounding-type plug (three prongs) to connect to a NEMA 1-15R non-grounding receptacle (two slots). The use of such an adapter avoids the need to replace receptacles. This will prong adapter convert a 3-prong power plug into a 2-prong while maintaining the ground. Great for plugging 3-prong devices into older sockets or extension cords.
Grounding converter that adds three grounded outlets
Fast, easy, convenient and inexpensive way to convert 3-prong cords into 2-prong plug outlets
3-Prong Female, 2-Prong polarized plug
Polarized for extra protection; Safely add grounding protection to your indoor 2-prong outlets
Adapts grounded plugs to non-grounded outlets (3-prong to 2-prong) for US plug types