Optic-thermical combined technology detector with insulator incorporated. Interactive analogical detection with algorithms. Includes microprocessor for optic-thermical signal analisis and resulting. Dirt compensation and automatic adjustment to environmental conditions. Possibility to operate with dual or thermal technology at certain times of the day. Ideal for slow or quick progressing fires, high immunity to false alarms. Includes manual and automatical test functions and dedicated directioning (01-159). Includes two LEDs for alarm indication and remote indicator output.