Containing a patented smoke sensing technology, U.S.S.T. Alarms are very effective at detecting fast flaming fires. U.S.S.T. Alarms also respond quickest to slow smoldering fires. A U.S.S.T. sensor type provides Maximum Overall Protection while addressing the primary concerns of Fire Service Professionals.
Ionization technology is most effective in detecting fast flaming fires. This category of fire spreads at a rapid pace while consuming combustible materials. Origin points for these fires include, but are not limited to: fires burning in a wastebasket or kitchen grease fires.
Photoelectric technology is most effective in detecting slow smoldering fires. This category of fire burns slowly for hours before bursting into flame. Origin points for these fires include, but are not limited to: discarded cigarettes and unattended candles.