Solid three way switch, limited scene controller, runs warm

I have installed a handful of these WT00Z-1 switches over the last 2 years. They work very well for their intended purpose. They also work well as a scene controller, albeit one with only two buttons (up and down = button #0 and #255 on a Vera system). It would be nice if holding down the buttons up could be used to activate two additional scenes, but I have not found a way to do this. I am docking 1 star because these things run very warm. Every one I have installed over the years is warm to the touch all the time. I do not think it's a safety issue, but it tells me the power supply inside is very inefficient, and thus these consume far more power than needed.

Verified purchase: Yes | Condition: New