Shower Drain Boxes. Anything Better Than Rule?

Rule float switches suck. The newer rule switches use a clip in base. I keep swapping them out, with a last receipt get another one. Think I've got a good set working now. All mfgs had to get away from the mercury that was used in the older switches. I can't say if another brand is any better.
Those little 800 & 1K gph pumps can not eat hair and soap chunks. Locks up the shaft between the impeller and motor base. That lil screen is worthless and has to be removed to install the Rule clip in super switch. As liveaboards we found the real Liquid Plumber Gell every 6 months helped on this. Weekend users may just need it yearly. Don't use store or Green brands,,, worthless.

I even went so far to build my own sump in a past boat using a 2000 pump. It worked well but I relized the bigger pump,, pump much quicker and the system cycles quickly. Like Hatterasses, a wide sump helps on this. The 1750 pump helped also.

Don't use chlorine tabs here, the plastic gets brittle. I learned that the hard way also.

The small Par diaphragm pumps work a lil better but kills the small package design. My ER sump uses this pump.

I haven’t had much luck with whale pumps.

ultra switches aren’t cheap but you get what you pay for. I m replacing replacing every failing rule switch with an ultra. I keep a spare on board at all time now.

I have a couple of the Rule drain boxes on my boat. One handles A/C condensation. The other handles 2 showers. After a couple of years replacing float switches on the shower sump every few months, I installed a Johnson electronic switch. Every couple of months, I open up the box and scrub soap scum off of the switch and pump while running the shower to keep water coming in. An old tooth brush works well.

I do keep the original cylinder style strainer in place to catch most of the scum and hair. In 8 years since switching to the electronic float switch, I’ve had to replace one pump and one float switch. The failure was the result of my not maintaining a clean switch which caused the pump to stay on for an extended period until the pump gave out.

We have tried electronic switches. Glad you are getting some service out of them.
We have discovered them (Multi vendor) true PIA's and not usable in shower sumps or slightly dirty bilges. The last thing you need is a temperamental bilge pump switch.
We had customers request dual float switches trying to find security and sleep well.

I remember them. They re similar to the ultra switches in design without the enclosure.

I think they make a mini. Never seen one.
Please let us know how it turns out. A pic of the mini and your installation would be great.