Those who follow my posts will know that I stuffed an Epever 30 amp controller in my 5er.
I impulse purchased the matching remote monitor to compliment it.
Great unit, and allows me to alter charge parameters and see PV voltage and Batt voltage at a glance.
I surface mounted it on the bedroom vanity mostly because I like to keep an eye on battery voltage on my way from the Can to Bed, and I can see it from the living room on my way out the door without having to open the closet all the time.
Also, I hated the harmonic the water pump created throughout the trailer, not sure if the previous owner mounted it on a goofy standoff plate, or a "Eh, that'll do" by Jayco, but it didn't work for me.
Moved the pump to a harder mount point and installed an accumulator tank in its place.
Quieted down the pump by almost half, and in low flow uses like rinsing dishes it's not constantly cycling on/off