I bought a refrigeration controller , Dixell XR02CX.
I'm not too good with this electricity stuff...
this is the unit I've got (see more info in this link):
DIXELL: refrigeration and air conditioning controllers - monitoring system
I don't want to cut a hole into my fridge, since it is used for other things , too.
So I want to install it in a box that I could connect to power, and connect the fridge to it.
My question is, do I connect the controller to the power and it gives out power to the circuit , or does it get electricity only for its own function, and switches the circuit on/off - meaning it has to be connected to a power supply too ?