Sol-Ark 15k with APSmart Rapid Shutdown external power supply where to buy and what to buy

I’m trying to setup my Sol-Ark 15k with the APSmart RSD and I’d love to know what 12 volt external power supply people are using. I know the Sol-Ark can’t power it I contated APSmart and they admitted so but didn't offer an exact solution to the problem. I’m stuck… Attached are images of the specs on both devices and the email I got from APSmart. Any help would be greatly appreciated.

Easy solution found… connect the AC side of the power supply to L1 & L2 of the load terminal on my 15k and works perfect. Ran ground wire as well of course.

That should be a reasonable way to do this. You might want to keep a random 12V battery around to plug it into, as a backup option if you need to dark start the system from some weird state.