# The Ecodesign for Energy-Related Products and Energy Information Regulations 2021, Paragraph 3


(1) Electronic displays must meet the following requirements.
Electronic displays with automatic brightness control
(2) Electronic displays with ABC qualify for a 10 per cent reduction in Pmeasured if they meet all of the following requirements—
(a) ABC is enabled in the normal configuration of the electronic display and persists in any other standard dynamic range configuration available to the end-user;
(b) the value of Pmeasured, in the normal configuration, is measured with ABC disabled or, if ABC cannot be disabled, in an ambient light condition of 100 lux measured at the ABC sensor;
(c) the value of Pmeasured with ABC disabled, if applicable, must be equal to or greater than the on mode power measured with ABC enabled in an ambient light condition of 100 lux measured at the ABC sensor;
(d) with ABC enabled, the measured value of the on mode power must decrease by 20 per cent or more when the ambient light condition, measured at the ABC sensor, is reduced from 100 lux to 12 lux; and
(e) the ABC control of the display screen luminance meets all of the following characteristics when the ambient light condition measured at the ABC sensor changes—
(i) the measured screen luminance at 60 lux is between 65 per cent and 95 per cent of the screen luminance measured at 100 lux;
(ii) the measured screen luminance at 35 lux is between 50 per cent and 80 per cent of the screen luminance measured at 100 lux; and
(iii) the measured screen luminance at 12 lux is between 35 per cent and 70 per cent of the screen luminance measured at 100 lux.

---
Source: https://www.legislation.gov.uk/ukdsi/2021/9780348222920/schedule/19/paragraph/3 (the official version)
Page: https://openlegislation.uk/draft-ecodesign-for-energy-related-products-and-energy-information-regulations-2021/schedule-19/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.