The machine also options 3 easy to use buttons for guide tests and simple pairing modes. The smoke detector head can be swapped out for suitable Synergy+ heat detector heads which makes it easy to meet up with specifications. You should Be aware, this products is for indoor use only. https://worldsocialindex.com/story5525103/helping-the-others-realize-the-advantages-of-ems-firecell-wireless-fire-alarm