ISO 24550:2019

Ergonomics — Accessible design — Indicator lights on consumer products ISO 24550:2019

Publication date:   Oct 23, 2019

General information

60.60 Standard published   Oct 23, 2019


ISO/TC 159/SC 4 Ergonomics of human-system interaction

International Standard

11.180.30   Aids for blind or partially sighted people | 13.180   Ergonomics



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This document specifies design requirements and recommendations for indicator lights, mainly LED sourced, on consumer products for use by older people and people with visual disabilities. It does not consider the needs of persons who are blind.
Indicator lights include those that inform users visually about the conditions, changes in functional status and settings, and malfunction of products. They convey information by light on/off, time-modulated intensity, blinking, colour, luminance level, and layout.
This document addresses household and home appliances. It excludes electronic displays presenting characters and graphics, machinery, and appliances in special use for professional, technical, and industrial applications.

Life cycle


ISO 24550:2019
60.60 Standard published
Oct 23, 2019