FRONT VIEW OF PHOTOELECTRIC SMOKE DETECTOR
How does a photoelectric
smoke detector work?
LED STATUS
INDICATOR
LIGHT.
Blinks RED when
Normal
Stay solid RED
when in alarm.
BACK VIEW OF PHOTOELECTRIC SMOKE DETECTOR
COMMON
TERMINAL
COLLECTOR
TERMINAL
TRANSMITTER
TERMINAL
INSIDE VIEW OF PHOTOELECTRIC SMOKE DETECTOR
COLLECTOR
TRANSMITTER:
Emits a Infrared (IR)
beam
INSIDE VIEW OF PHOTOELECTRIC SMOKE DETECTOR
COLLECTOR
NOTICE: When no
smoke is present
the IR beam does
not hit the collector
Infrared (IR) beam
Once the IR beam hits the smoke the beam disperses. When the IR beam is displaced
enough it will be picked up by the collector. This will cause the smoke detector to go into
alarm.
COLLECTOR