AS/NZS 60335.2.27:2020 deals with the safety of electrical appliances incorporating emitters for exposing the skin to optical radiation (wavelength 100 nm to 1 mm), for household and similar use, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances. This Standard will supersede AS/NZS 60335.2.27:2016 three years from the date of publication (i.e. on 26 June 2023). During this period AS/NZS 60335.2.27:2016 will also remain current. Regulatory authorities that reference this Standard in regulation may apply these requirements at a different time. Users of this Standard should consult with these authorities to confirm their requirements.