Fusion is comparable for the loop module, sharing exactly the same technologies, and it also supports up to 31 wireless equipment. The quantity of Fusion interfaces, is determined by the control panel getting used, but a contact to EMS support offers you far more particulars. Update to present day fire https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/