DIN EN 60335-2-53-2007 家用和类似用途电器.安全性.第2-53部分:桑拿浴室加热装置的特殊要求
Household and similar electrical appliances - Safety - Part 2-53: Particular requirements for sauna heating appliances (IEC 60335-2-53:2002 + A1:2007); German version EN 60335-2-53:2003 + A1:2007