40.20 Dec 12, 2025
PRVC Mar 6, 2026
IEC
TC 34
International Standard
PROJECT
IEC 63544 ED1
40.20
DIS ballot initiated: 12 weeks
Dec 12, 2025
Horticultural lighting - Luminaires incorporating LED sources for horticultural lighting - Performance
40.20 DIS ballot initiated: 12 weeks
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