Deals with the safety of electric blankets, pads and other flexible heaters which heat the bed or human body. It also deals with control units supplied with the appliance. It covers appiances with a rated voltage less than 250 V. For heaters for medical use, see IEC 60601-2-35. For heaters for animals, see IEC 60335-2-71. For water bed heaters, see IEC 60335-2-66. For foot warmers and heating mats, see IEC 60335-2-81.