Good evening all.

I am tidying a spare bedroom and want to move a dual voltage shaver socket
from one place to another.
This is an MK gadget with separate 115/240V outlets.
At present the unit is in a deep surface mounted pattress on a solid wall.

I will move it to a stud wall with t&g panelling and could quite easily do
away with the deep pattress.
There is plenty of room within to accept the transformer but I am a little
worried about the heat output.
Setting it into the t&g would be a doddle but am a bit worried about the
heat ouput if the transformer is constant.

Is the transformer always on whilst it has power or does it only come live
(make heat) when an appliance is attached ?

Many thanks,

Nick.