http://www.leviton.com/afci
Leviton's new SmartlockPro Outlet Branch Circuit (OBC) AFCI Receptacle offers added protection from potentially hazardous arc-faults resulting from damage in branch circuit wiring as well as extensions to branches such as appliances and cord sets. By detecting hazardous arc-faults and responding by interrupting power, the SmartlockPro OBC AFCI Receptacle helps reduce the likelihood of the home's electrical system being an ignition source of a fire.
Leviton OBC AFCI Receptacles are designed to recognize many types of hazardous arc-faults. Often unseen, arc-faults can occur anywhere in the home's electrical system including within walls, at loose electrical connections or within electrical cords accidently damaged by impinging furniture.
AFCI's are now required by the National Electrical Code® in many areas of the home including bedrooms, family rooms, dining rooms, living rooms, sunrooms, closets, hallways and similar rooms or areas.