Residential grade tamper resistant thermoplastic receptacle meets the 2008 NEC (National Electric Code) requirement. Shutter mechanism inside the receptacle blocks access to the contacts unless a 2-prong plug is inserted, helping to ensurehairpins, keys, and other similar objects will be locked out. Quickwire push-in or side wired terminals. Heavy-duty construction offers long, trouble-free service life. CSA (Canadian Standards Association) certified for tamper-resistant devices. Limited 2 year warranty.