Passive fire safety design components are used to resist, retard and isolate flames along with the associated smoke and fumes: they don't in on their own extinguish flames therefore These are classed as 'passive safety'. Environmental Restrictions: Harsh temperatures, high humidity, or corrosive environments may effects the everyday living and https://socialwebconsult.com/story5920137/ems-firecell-wireless-fire-alarm-an-overview