DIN EN 60335-2-12-2009 家用及类似用途电器.安全性.第2-12部分:保温板和类似器具的特殊要求
Household and similar electrical appliances - Safety - Part 2-12: Particular requirements for warming plates and similar appliances (IEC 60335-2-12:2002 + A1:2008); German version EN 60335-2-12:2003 + A1:2008