Shutter mechanism inside the receptacle blocks access to the contacts unless a 2-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
Ultrasonic heavy-duty construction offers long, trouble-free service life
Protects children from electrical shock injuries
Double-wipe power contacts for reliable conductivity and plug retention
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