Most radio-interlinked devices can join up to fifteen alarms in only one community, furnishing comprehensive coverage for bigger Houses with many flooring and rooms. Wireless fire alarms are a good choice for worksites which will need to have fire protection but don’t have the opportunity to hardwire in a process. https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/