Read more: 50 Small Backyard Landscaping Ideas That Will Transform Your Space Electric sauna heaters -- such as the Vevor 9KW Sauna Heater-- are the most common option because they're affordable ...

The sauna itself was purchased as a kit, and included an electric heater controlled by a thermostat. As explained in his detailed documentation, [Al] integrated a Sonoff TH16 into the original ...