XFP508X C-Tec BS5839-6 Hush Button (Apollo XP95/Discovery)XFP508X BS5839 6 Hush Button (Apollo XP95 Discovery) A new BS5839 6 Compliant fire alarm solution for houses of multiple occupation (HMO's) Designed to sit on an Apollo analogue addressable loop Each Hush Button has its own conventional detector circuit, conventional sounder circuit and onboard loop isolator Provides each HMO dwelling with a two minute silence facility and a 15 minute silence facility. See schematic for design layout (more images)