Factory terminated devices and connectors mean that device installation is the same regardless of skill level of the installer. The UL listed connectors are keyed to ensure proper wiring installation into each receptacle. The connector simply snaps into the back of the device no fussing with wires, stripping or tightening screws. PlugTail® devices are finger safe with no exposed terminals, so taping is not required. Now device installation is a snap. A sturdy mechanical shutter system helps prevent children from sticking objects into the receptacle. The toughest and safest tamper resistant receptacle available. They are offered in both duplex and decorator style, in addition to split circuit versions.