Passive fire safety building elements are used to resist, retard and isolate flames and also the related smoke and fumes: they do not in them selves extinguish flames as a result They are really classed as 'passive security'. EMS reserves the proper to alter any data about goods as A https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/