| SERIES 65 OPTICAL SMOKE DETECTOR THE OPTICAL SMOKE DETECTOR USES AN INTERNAL PULSING LED AND A PHOTO-DIODE AT AN OBTRUSE ANGLE. IN THE EVENT OF SMOKE ENTERING THE CHAMBER, THE LIGHT PULSE FROM THE LED WILL BE SCATTERED AND REGISTERED BY THE PHOTO-DIODE. THE DETECTOR WILL THEN ENTER THE ALARM STATE AND THE INDICATOR LED LIGHTS UP. |
