DIN EN 60335-2-31:2009
Household and similar electrical appliances - Safety - Part 2-31: Particular requirements for range hoods and other cooking fume extractors, (IEC 60335-2-31:2002 + A1:2006 + A2:2008); German version EN 60335-2-31:2003 + Corrigendum:2005 + A1:2006 + A2:200