Wow!!!
That was pretty slick. Your statement has enormous relevance to the subject, in terms of suitability of each particular item that will resist: Fungus , corrosion, push button life span, oxidized contacts, dissolving critical parts of switches and intolerable high humidity etc.
Sure, life in the tropics is tough. And you don't have to go very far. Just go to Hawaiian Islands south of Honolulu and you will experience it first hand. Outside the problem of deterioration of any man made material, locals had to contend with howling 150 mile-an-hour wind. Mosquitoes/flies that will almost lift you airborne off your comfy hammock.
But let's go back to the issue. All of the scenario you brought up should have been mentioned on your first question.
In it, you indicated that your criteria was to build something that will look like a finish product that is fit for a princess' living room: flashy flush mounted membrane switches, glow orange light, no visible oogly toggles and rockers etc.
Relevant response came forward and I thought they were fantastic. However, in the end you are telling everyone that you require specs that amount to building a battleship, replete with military specs and completely immune to harsh environment.
This goes as well for the 24 volt requirement (which you should have mentioned) in the first place.
I don't know if you've been in the service.
Twenty four volt vehicles , including buses (yes they they do have buses in the military base.) that shuttle military families inside the base to different areas like schoolhouse, gym, PX center etc., are ever present.
These 24 volt vehicles were adapted by the military to achieve compatibility among different vehicles like personnel carriers, amphibious vehicles, including humvees etc. These vehicles run on diesel.
Being high compression engines and effect of oil viscosity that they are, they require glow plugs before you crank the engine. 24 volts is very efficient for this purpose.
I had a diesel Mercedes sedan that had two batteries that supply 24 volts for glow plugs and then switches to 12 volt to match with equipment voltage for radio, ammeter and lights etc. In emergency situation you can even use a certain formulation of jet fuel that could run a diesel engine.
Not efficient but will get you out of a bind.
This is a forum that I consider a bastion of valuable information for Rver like me. It serves those newcomers as well-- albeit enormously.
The type of discussion (and people involved) that dwell on the “GOTCHA” premise, doesn't reflect the noble purpose of this site. This attitude flies in the face of: “I'm here to tell you something that nobody else knew.” camouflaged arrogance. Totally puerile and uncalled for.
I hope you are in better shape that would not require to push that “ Help, I've fallen and I can't get up.” SOS button.
Your inimical eloquence maybe of some help for some, but would be something that would be at the bottom of my priorities.
