Power Alarm Base station using a Step Down DC converter from my RV's 12 volt system

I would like to use a device such as this (LINK) to power my Ring Alarm base station in my RV. We often boondock and only have 12 volt power. Does anyone have any experience or advice on how to complete this task?

You are of course free to try non-standard ways to power your devices but be aware that it may void your warranty.

Of course I knew that I could try it. I was hoping that someone might have already done this or had some advice on doing it.