The system also options a few easy to use buttons for handbook tests and straightforward pairing modes. The smoke detector head is usually swapped out for appropriate Synergy+ warmth detector heads which makes it very easy to fulfill necessities. Be sure to Note, this item is for indoor use only. https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/