Commercial grade nylon tamper-resistant GFCI (ground fault circuit interrupter) receptacle with monochromatic buttons and indicator light. Features a shutter mechanism inside the receptacle which blocks access to the contact unless a 2-prong plug is inserted, helping to ensure objects such as hairpins and keys will be locked out. Can be wired to protect all receptacles downstream on the same circuit. Narrow body, back and side wired, captive mounting screws for fast installation. Large-head terminal screws accept up to #10 copper wire, triple wire power contacts allow for maximum conductivity and plug retention. Includes convenient washer-type break-off plaster ears for best flush alignment, galvanized steel mounting strap, and break-off tabs for easy 2-circuit conversion. 2P-3-wire, NEMA (National Electrical Manufacturers Association) 5-20R. Limited 2 year warranty.