Has anyone attached this to Node Red or anything similar? I want to control some higher power things such as UFH and an immersion heater.
Try sonoff th16 cheaper, you can attach thermostat and there is a node-red contrib ewelink, or you can flash device to tasmote or espeasy
That link won't work for me - I think it is because it is laced with advertising links and my security blocks it.
It is more friendly not to spread advertising links.