Factory-terminated wiring devices are what you get with PlugTail wiring devices. Wiring devices are terminated the same no matter what the skill level. The UL-Listed connectors are keyed to ensure proper wiring installation into each extra heavy-duty receptacle. Just snap the connector into the back of the device. And a sturdy mechanical shutter system helps prevent children from sticking objects into the receptacle.
Additional Info: Heavy Duty, Operating Temperature: -40 to 60 deg C