Determine onsite smoke and temperature and activates alarms when necessary.   Pressurizes stairs to provide a smoke free passageway in buildings. This is vital during a fire.     If used with a fire alarm, the system protects occupants by controlling the flow of smoke in a fire.     In addition to smoke control, it enables inspection of the status of smoke ontrol system and implements overrides if required.     It has a control system to recall elevators and for  fire department access to all floors during a fire alarm.       BACK