Set "thermostat" (actually water heater) higher than 40degrees Celcius

[GSzabados (Gabor Szabados)]

@music_and_cities

It’s just in a Scene it’s limited to 40C

Have you tried Automations?

Custom Capability and CLI Developer Preview

Overview At SmartThings we want to provide tooling to allow developers to get their device integrations working in the SmartThings app. These changes will allow an integrator to move from using custom commands and attributes to custom capabilities. DTH Migration For Custom Capabilities In order to follow along with the example set forth in this guide, you will want to have the CLI set up, so make sure that you take this step first. You can download the CLI here from the releases tab and read more about it in the README. It is also recommended that you familiarize yourself with the concepts: Custom Capabilities Capability Presentations Walkthrough We are going to walk through a simple example of updating our Device Type Handler (DTH) so that devices installed with the DTH will be …

The capabilities have the tile settings and the automation setting part. The range might be wrong there. You can use the CLI to query the DH for the capability used and then check the content of the capability with the CLI, as I can remember.
But @orangebucket has a better knowledge about the CLI if you want to go down the rabbit’s hole.