What makes a light fixture 12v DC vs. 120v AC?

same thing with a little more light
4w per light

yeah i was thinking, Switches instead of remote

mount the lights in different locations

while the 'out come' is the same, i wonder if it is the control unit that fails, not the little remote !

i have little remote like that for my review display
its 5yrs old and still works

of course some people cant resist constantly playing with a remote