Product Description

Intended Audience: Designers, architects, engineers, users, general public.
Intended Interest Categories: Specifier (US), Affected (UA), Public Interest (UP), Academic, Research (GAR), Government, Regulatory (GGR), General SME (GSME), Organizational (OM).
Description: This revision completely re-organizes the standard, and includes:
Section 2 – provides concepts and terms, such as open vs. proprietary protocols.
Section 3 – provides the table of standard designations, including a short form and a longer description, for example, “LE” Leading Edge, “TE” Trailing Edge”, “UPC” Universal Phase Control.
Annex A – provides sample luminaire and control schedules
Annex B – provides sample information on product data sheets.
Page count: 23 pages
Publisher: Illuminating Engineering Society (2026)
SKU: ANSI/IES LP-42-26
ISBN: 978-0-87995-509-0
Previous edition: RP-42-20
Chapters:
- 1.0 Introduction and Scope
- 2.0 Concepts
- 3.0 Control Methods and Open Protocols
- 4.0 Protocols That Are Not Fully Interoperable
- Annex A – Sample Luminaire and Control Schedules
- Annex B – Sample Data Sheets
Citation Format:
Illuminating Engineering Society. ANSI/IES LP-42-26, Recommended Practice: Dimming and Control Method Designations. New York: IES; 2026.


