Put detectors in correct destinations to stay away from spots liable to Phony triggers, for example kitchens or loos. The panel is usually on to observe the position of the method and will warn of lower battery, machine failure or RF interference. Section of BS5839 particularly pertains to the maintenance https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/