IEC60335-2-81:2012《Household and similar electrical appliances-Safety-Part2-81:Particular requirements for foot warmers and heating mats,IDT》clause 21.101 and figure 101
IEC60335-2-81:2012《Household and similar electrical appliances-Safety-Part2-81:Particular requirements for foot warmers and heating mats,IDT》clause 21.101 and figure 101