THE PRODUCT IS A CONVENTIONAL PHOTOELECTRIC SMOKE SENSOR FOR USE WITH CONTROL PANELS. THE OPTICAL DETECTOR UTILISES THE LIGHT SCATTER SENSING PRINCIPLE, USING A LIGHT EMITTING DIODE AS THE SENSING ELEMENT. DUAL-ALARM FUNCTION, THE DETECTOR PROVIDES A SERVICE ALARM INDICATION TO THE PANEL WHEN THE DETECTOR SIGNAL LEVEL REACHES BETWEEN 65% AND 75% OF ALARM LEVEL. THE SENSING OF SMOKE IS THE PRIMARY FUNCTION OF THIS PRODUCT. THIS PRODUCT DOES NOT HAVE AN INTEGRAL SOUNDER OR RECORDING DEVICE.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR)S GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 8531: ELECTRIC SOUND OR VISUAL SIGNALLING APPARATUS (FOR EXAMPLE, BELLS, SIRENS, INDICATOR PANELS, BURGLAR OR FIRE ALARMS), OTHER THAN THOSE OF HEADING 8512 OR 8530. GIR 3B HAS BEEN USED AS THE LED SENSOR GIVES THE ESSENTIAL CHARACTER. GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 853110: BURGLAR OR FIRE ALARMS AND SIMILAR APPARATUS. CN CODE : 85311030 OF A KIND USED FOR BUILDINGS. ALSO CLASSIFIED IN ACCORDANCE WITH : HARMONISED SYSTEM EXPLANATORY NOTES NOTE F(4) TO 8531