Harvia Safety Switch - Black, 500x500mm (19.6x19.6")Description The Harvia Safety Switch puts safety and peace of mind first so you can fully surrender to sauna moments. The safety switch monitors the electric heater whenever the heater is on. If something such as a towel or clothing falls on the heater, the safety switch will automatically turn the electric heater off, while preventing it from turning back on until that article is removed. This safety technology is essential for a family with