Photoelectric alarms are generally more effective at detecting slow, smoldering fires that smolder for hours before bursting into flame. Sources of these fires may include cigarettes booming in couches or bedding.
Photoelectric alarms are generally more effective at detecting fast, flaming fires that consume combustible materials rapidly and spread quickly, Sources of these fires may induce flammable liquids or paper burning in a waste container.
However, both types of alarms proved adequate detection of both types of fires.
smoke alarm EN approval fire alarm stand alone smoke detector
Press and hold the TEST key, the product enters the test
state. When the red light flashes, the buzzer sounds, and
the action mode is the same as the alarm mode,it mean
normal working ; When it will flash twice or three times
in red, without buzzing Tweeter, it mean it unnormal working
Smoke is detected every 6 seconds. If the alarm threshold
is reached, it is detected 6 times at 1S speed each time to
determine the alarm condition and the red light flashes.
After 6 times of determining the fire, an siren and flash