Steam generating apparatus; steam generators; steam bath installations; installations for the production of steam; steam baths; sauna bath installations; Steam generators and steam heating boilers used for steam baths; steam bath installations; controls for steam bath, steam room and sauna installations; controls for showers; thermostatic control switches for showers; thermostatic control switches for steam bath, steam room and sauna installations; sauna heaters; chromotherapy lights; shower lights; steam heads