Im not sure what irons you are referring to. All the ones I’ve ever seen and used have a circular dial which lets you turn it on and then select the temperature you want. Everything is controlled at the iron nothing is controlled at the socket. I think the ones that you call traditional are probably the less expensive basic version of an iron, because like I said every iron I’ve ever seen has a dial that lets you not only select what temperature you want but turning it all the way clockwise turns it off.
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