AN ANALOGUE ADDRESSABLE HEAT DETECTOR WHICH USES A THERMISTOR OF LOW THERMAL MASS AS ITS SENSING ELEMENT. THIS IS USED TO DETECT CHANGES OF TEMPERATURE IN THE ATMOSPHERE. THE DETECTOR CONNECTS TO THE CONTROL PANEL WHICH QUERIES THIS DETECTOR AT REGULAR INTERVALS AND IF THE DETECTOR IS FOUND TO BE IN ALARM MODE THE FIRE ALARM CONTROL SYSTEM WILL TRIGGER ANY WARNINGS OR OTHER RESPONSES AS NECESSARY. THE ADDRESS SET WITHIN THE DETECTOR CORRESPONDS TO ITS PHYSICAL LOCATION WITHIN A BUILDING & ON THE CONTROL PANEL FOR THE FIRE ALARM SYSTEM IT IS CONNECTED TO. THIS DETECTOR CANNOT BE USED ON A STAND-ALONE BASIS - IT CAN ONLY BE USED AS PART OF A FIRE CONTROL SYSTEM. THE EXTERIOR LED (LIGHT-EMITTING DIODE) FITTED SERVES ONLY TO INDICATE WHEN THE DETECTOR IS BEING QUERIED BY ITS CONTROL PANEL OR WHEN THE DETECTOR IS IN ALARM MODE AND ISN'T INTENDED AS A VISUAL WARNING. NO PHYSICAL OR CHEMICAL ANALYSIS IS CARRIED OUT BY THIS HEAT 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 9027 - INSTRUMENTS AND APPARATUS FOR PHYSICAL OR CHEMICAL ANALYSIS (FOR EXAMPLE, POLARIMETERS, REFRACTOMETERS, SPECTROMETERS, GAS OR SMOKE ANALYSIS APPARATUS); INSTRUMENTS AND APPARATUS FOR MEASURING OR CHECKING VISCOSITY, POROSITY, EXPANSION, SURFACE TENSION OR THE LIKE; INSTRUMENTS AND APPARATUS FOR MEASURING OR CHECKING QUANTITIES OF HEAT, SOUND OR LIGHT (INCLUDING EXPOSURE METERS); MICROTOMES GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 9027 80 - OTHER INSTRUMENTS AND APPARATUS CN CODE 902780 17 - OTHER THAN EXPOSURE METERS: ELECTRONIC; OTHER THAN ELSEWHERE SPECIFIED IN THIS SUBHEADING ALSO CLASSIFIED IN ACCORDANCE WITH:- ADDITIONAL NOTE 1 TO CHAPTER 90