Fire rated items are flame resistant / fire retardant and present some passive resistance but aren't intumescent and don't extend when heated. These should still be preferable for normal construction uses than standard items that have no ranking of any type. Wired units have already been a longstanding go-to for https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/