On one of my first machines I had a remote built into the gun that started and stopped my machine and controlled my burners and 2 soaps on an upstream injector. I can get those remotes but the problem was the upstream chemical we found is not as effective as the downstream. Plus with the downstream we shoot soap 20 feet and that's not the case with upstream. On top of it, the chemicals were hard on the plungers and there was always something else to work on. These were very expensive and we had to charge the battery every night. You always had to have 2 guns with batteries.
A remote system that controls the chemicals via low pressure and could control the burner on off, would be ideal. Since we control the chem injection at our gun, we don't need a remote for that, you simply squeeze the trigger. The remote would be used to change from one soap to another and shut the burner on and off at a pre-set temperature. So 2-stepping would be a breeze.
I'm setting up a rig that is going to be completely remote from the downstream chemical injection to the burner, to the hose reels. The hose reels will be remotely reeled up in an almost perfect fashion. All you have to do is hold one end. This would almost replace an entire employee. A single guy could remotely start his machine and grab one end of the hose and the gun and 2 step with chems for literally hours with no need for anything but a brusher and/or a driver. The question is how much is it going to cost? That's what I'm trying to figure out by building a spec unit.