Shower toilet: electricity or hot water

Someone still has to come who keeps the warm water at exactly the right temperature - this also exists with portafilter espresso machines, albeit at a different temperature level. Whether you can simply convert an ECM with a fixed water connection... If you’re going to do it, do it properly. Cold water at the beginning is just not acceptable.

Preheat small boiler? But it also needs electricity, then you can also take a bowl with [Durchlauferhitzer] (seems to me the smartest option)

With the TeceOne, which operates without electricity, I assume it has a thermostat similar to many shower faucets nowadays. That should probably work.

But as I said: by now I tend to recommend the AxentOne for the mentioned case, I have it and it works well (with electricity).