This wireless interconnection gets rid of the need for hardwired connections concerning floors or distant rooms, which makes it perfect for older homes with no existing alarm wiring. FireCell is based on “Hub & Cluster” technology an EMS patented infrastructure which ensures highest sign amounts and transmission, throughout any web-site https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/