Best way to get through rock wall and metal cabinet?

[Hatallica]

@Hal3

Mount another plastic box on the metal box to hold the Zigbee stuff.

Or nearby. Here is an example from my former house where I used Zooz Zen16 to control pool pump speeds.

Can someone advise on what device I need to control my Pentair SuperFlo VS?

Now that the sun is up, here is a look at the overall arrangement. I was able to tap power from an old timer box. It is not clearly shown, but the control cable comes through a cable gland on the bottom (P7 or P9, I do not recall). 5V (red) wire goes to the blue wire nut, where it is split out to one side of each relay. The wires that I added to split it out are actually red with a green stripe. Green/Yellow/Orange go to the other side of each relay for speeds 1/2/3, respectively. A word o…