A PREPROGRAMMED SEMI-CONDUCTOR DEVICE IN THE FORM OF A MONOLITHIC APPLICATION SPECIFIC INTEGRATED CIRCUIT (ASIC). THE IC CONTAINS NO OTHER ACTIVE, PASSIVE OR DISCREET COMPONENTS. IT IS USED FOR ANALYSIS OF DATA PRODUCED BY THE SENSING ELEMENTS IN SMOKE DETECTOR PRODUCTS TO DETERMINE WHETHER THE DATA BEING RETURNED INDICATES AN ALARM CONDITION THAT SHOULD BE REPORTED BY THE DETECTOR.

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 8542 - ELECTRONIC INTEGRATED CIRCUITS GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 8542 39 ELECTRONIC INTEGRATED CIRCUITS; OTHER THAN ELSEWHERE SPECIFIED IN THIS HEADING CN CODE 854239 90 OTHER THAN GOODS SPECIFIED IN NOTE 9(b) (3 AND 4) TO THIS CHAPTER ALSO CLASSIFIED IN ACCORDANCE WITH:- NOTE 9 (b) (1) TO CHAPTER 85 HARMONIZED SYSTEM EXPLANATORY NOTES (HSEN) (I) TO HEADING 8542