15 Amp, 125 Volt, NEMA 1-15R, 2P, 2W, With Ears Duplex Receptacle, Straight Blade, Residential Grade, Non-Grounding, Side Wired, Steel Strap, - Brown Sec. 210-7(d)(3) permits any of the following installations when replacing a 2-wire ungrounded receptacle: (a) Replace it with another 2-wire receptacle; (b) Replace it with a GFCI-type receptacle and mark the receptacle with the words "No Equipment Ground" or (c) Replace it with a grounding-type receptacle protected by a GFCI device (circuit breaker or receptacle). Since the grounding terminals for the receptacles are not grounded, you must mark the receptacles with the words "GFCI Protected" and "No Equipment Ground"