Quickly press the Hush Button to prevent any Fake alerts; the detector instantly recovers to Prepared mode after dispersal of smoke and/or warmth Vital These cookies are desired for critical functions of the website for example earning payments, and to ensure core functions work accurately. Critical cookies cannot be switched https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/