It is easy to comply with the 2008 NEC mandate for TR Receptacles in all new residential housing. This requirement resulted from a Consumer Product Safety Commission study that reported alleged injuries in the home caused each year by children attempting to insert foreign objects into receptacles. As a long-time manufacturer of tamper-resistant devices, we are pleased to be at the forefront of this safety measure with an expanded product line encompassing a wide range of devices in Residential and Commercial Grades. Shutter mechanism inside the receptacle blocks access to the contacts unless a two-prong plug is inserted, helping ensure hairpins, keys, etc., will be locked out. TR symbol on residential receptacles assures they meet the 2008 NEC requirement. Heavy-duty construction offers long, trouble-free service life. Outlet Configuration: Duplex. Outlet Type: Standard. Number of Outlets: 2. Outlet Location: Wall. Indoor/Outdoor: Indoor. NEMA Configuration: Non-Nema. Rating: Tamper Resistant. Grounding: Self-Grounding.