ST control of LED under-cabinet "puck" lights?

I’m looking for a way to control a set of LED puck lights such as the set linked below with SmartThings. I know the system uses a 110VAC power adapter to step down to 12VDC for the lights, so a plug-in dimmer running at 110 obviously won’t work. I would need something “in line” with the 12V current. I think I’m looking for something like the Fibaro. However, I’m not entirely clear on how I would connect it, or if that’s even the solution I need. Any advice?

Are you trying to dim them in ST or just have them switch on/off?

I’d like to be able to dim them. I know I could just control On/Off with a simple plug-in outlet.