The gadget also characteristics a few easy to use buttons for guide tests and straightforward pairing modes. The smoke detector head may be swapped out for compatible Synergy+ heat detector heads which makes it very easy to fulfill prerequisites. Please Be aware, this solution is for indoor use only. Wired https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/