The XP95 optical detector uses an internal pulsing LED and a photo-diode at an obtuse angle.
In the event of smoke entering the chamber, the light pulse from the LED will be scattered
and registered by the photo-diode.
A signal is generated and transmitted digitally to the control equipment.
The XP95 Optical detector is unaffected by wind or atmospheric pressure
and operates over the temperature range -20 to +60 degrees C.