Intumescent products are those which broaden (or intumesce) to numerous moments their first dimensions when activated by substantial temperatures. This motion stops the spread of flames and smoke to other elements of a developing. Passive fireseals and pipe clamps incorporate intumescent compounds. EMS reserves the right to vary any facts https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/