The LE-SLR-24V photoelectric smoke
detector utilizes two bicolored LEDs for
indication of status. In a normal standby
condition the LEDs flash Green every 3
seconds. When the detector senses that
its sensitivity has drifted outside the UL
listed sensitivity window the LEDs will
flash Red every 3 seconds. When the
detector senses smoke and goes into
alarm the status LEDs will latch on Red.