Fire alarm programs should be developed and mounted In line with building codes, which specify the categories of detectors, alarms, and control panels to be used in differing kinds of buildings. Most radio-interlinked alarms have a range of 150 meters in an open space and as much as 50 meters https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/