Important Info: Based on the NFPA report, working smoke alarms decrease the risk of Loss of life in residence fires by about 60%. Up to 126 wireless addresses on an individual loop, with expansion using further panels on a wireless community Some RF smoke alarms also can act as repeaters, https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/