#1	Shutter mechanism inside the receptacle blocks access to the contacts unless a twoprong plug is inserted helping ensure hairpins keys etc will be locked out
#2	TR symbol on residential receptacles assures they meet the 2008 NEC requirement
#3	Ultrasonic heavyduty construction offers long troublefree service life
#4	Protects children from electrical shock injuries
#5	Doublewipe power contacts for reliable conductivity and plug retention