The product also features three easy to use buttons for manual tests and straightforward pairing modes. The smoke detector head can be swapped out for compatible Synergy+ warmth detector heads rendering it easy to satisfy requirements. Make sure you Notice, this product or service is for indoor use only. EMS https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/