The Series 65 Optical Smoke Detector incorporates a pulsing LED located within the housing of the detector. The external detector moulding is identical to that of the ionisation detector but has an indicator LED which is clear in quiescent state but produces a red light in alarm.

• Responds well to slow-burning, smouldering fires
• Well suited for bedrooms and escape routes
• Unaffected by wind or atmospheric pressure
• Flashing LED