Normal Mode 2 : State of a self contained emergency luminaires which is ready to operate while the normal supply is on, and, in the case of a normal supply failure, the luminaires automatically changes over to the emergency mode
Solutions Fire Safety Ltd, Fire Safety Glossary: An A - Z of definitions regarding fire safety terms and vocabulary, Solutions Fire Safety Ltd, UK 2012. http://solutionsfire.co.uk/Fire-literatures-PDF/Fi re-Safety-Glossary.pdf, (Fr Sfty - Brit) {465}