DIN EN 60704-2-2:2011 家用和类似用途电器.气载听觉噪音测定用试验规程.第2-2部分:风扇加热器的详细要求(IEC 60704-2-2-2009).德文版本EN 60704-2-2-2010
Household and similar appliances - Test code for the determination of airborne acoustical noise - Part 2-2: Particular requirements for fan heaters (IEC 60704-2-2:2009); German version EN 60704-2-2:2010