Cable Matters 3-Pack 2 Prong Outlet Switch ON Off, Plug-in Switch for Outlet, Wh
The non-blocking design allows you to connect two outlet adapters into a standard duplex receptacle. Perfect for 2-Prong Devices: This single-port 2P plug with switch (NEMA 1-15P to NEMA 1-15R) is designed for use with 2-prong polarized cords.