Chapter 90 covers optical, photographic, cinematographic, measuring, checking, medical or surgical instruments and apparatus, and precision instruments and apparatus; parts and accessories thereof. Goods in this chapter generally have the characteristics of being technology-intensive and requiring high precision, including instruments and apparatus for measurement, detection, analysis, control, and other uses. As a device for measuring temperature, a temperature sensor falls within the category of measuring and checking instruments in this chapter and is fundamentally different from the electrical and electronic components of Chapter 85. When classifying, the key judgment is whether its function belongs to the instruments and apparatus of this chapter. Heading 9025 covers thermometers, pyrometers, barometers, hygrometers, psychrometers and combinations thereof, as well as parts and accessories of such instruments. This heading includes not only traditional liquid-filled glass thermometers but also various types of temperature measuring instruments such as electronic, resistance, and thermocouple types. As a device for measuring the temperature of engine coolant, intake air, ambient air, and the like, a vehicle-mounted temperature sensor has temperature measurement as its core function and is therefore classified under this heading. However, note that if the sensor is merely a simple thermistor element and does not constitute a complete thermometer, it may be classified under another heading. First 2 digits = 90: indicates Chapter 90, covering optical, measuring, checking, medical, and other instruments and apparatus. Digits 3-4 = 25: indicates heading 9025, specifically thermometers, pyrometers, barometers, hygrometers, psychrometers and combinations thereof. Digits 5-6 = 19: indicates subheading 902519, namely other thermometers and pyrometers (not liquid-filled). Subheading 902511 covers liquid-filled thermometers, while 902519 covers other types, including electronic, resistance, and thermocouple temperature sensors. Therefore, vehicle-mounted temperature sensors are usually classified under 902519 because they are mostly electronic and not liquid-filled. A vehicle-mounted temperature sensor is used to measure temperature and belongs to temperature measuring instruments; its function conforms to the description of heading 9025. It does not belong to the sensors of Chapter 85, because sensors in Chapter 85 generally refer to elements that convert physical quantities into electrical signals, but if they constitute a complete temperature measuring device, they are preferentially classified under Chapter 90. In addition, it is not classified under the liquid-filled subheading of 9025 because it is mostly electronic, and is therefore classified under 902519. It is clearly different from adjacent codes such as 9025.11 (liquid thermometers) and 9025.80 (other instruments).

Product name: The standard name of the declared goods should be accurately described as vehicle-mounted temperature sensor, avoiding the use of common names or model numbers instead. Use: Explain the application scenario of the sensor, such as use for measuring automobile engine coolant temperature, intake air temperature, etc. Working principle: Describe the temperature measurement principle of the sensor, such as thermistor type, thermocouple type, platinum resistance type, etc. Brand: Declare the brand name of the product, such as Bosch, Delphi, etc.; if there is no brand, fill in "no brand." Model: Fill in the specific model of the product to distinguish different specifications. Measurement range: State the temperature measurement range of the sensor, such as -40°C to 150°C. Output signal type: Explain whether the output signal is an analog voltage, resistance value, or digital signal. Customs declaration example: Product name: Vehicle-mounted temperature sensor Use: For measuring automobile engine coolant temperature Working principle: Thermistor type Brand: Bosch Model: 0280130039 Measurement range: -40°C to 150°C Output signal type: Change in resistance value Suggested classification: 9025190090 Incorrectly classifying the sensor under Chapter 85, ignoring its function as a temperature measuring instrument. Failure to distinguish liquid-filled type from other types, incorrectly classifying under 902511. Incomplete declaration elements, such as missing working principle or measurement range, leading to classification disputes.

The core basis for classification is the function of the goods, the working principle, and whether they constitute a complete temperature measuring instrument. According to the Explanatory Notes to the Harmonized Commodity Description and Coding System for headings, heading 9025 includes temperature measuring instruments such as thermometers and pyrometers, whether or not they incorporate recording or signal output devices. If a vehicle-mounted temperature sensor independently completes temperature measurement and outputs a signal, it conforms to the description of 9025. If it is merely a thermistor element not packaged as a sensor, it may be classified under headings such as 8533 or 8541. Therefore, a comprehensive judgment must be made based on its structure and function. 902511 Liquid-filled thermometers: 902511 specifically refers to liquid-filled thermometers, such as liquid-in-glass thermometers. Vehicle-mounted temperature sensors are usually electronic, not liquid-filled, and are therefore classified under 902519. 902580 Other thermometers and combinations: 902580 includes other measuring instruments such as barometers and hygrometers, while 902519 refers only to other thermometers and pyrometers. If the sensor only measures temperature, it should be classified under 902519. 853340 Other variable resistors: 853340 includes variable resistors such as thermistors, but if they are packaged as temperature sensors and have a temperature measuring function, they are classified under 9025. 854151 Semiconductor sensors: 854151 includes semiconductor-based sensors, but if they are specially used for temperature measurement and constitute a complete instrument, they are preferentially classified under 9025. 870899 Motor vehicle parts: 870899 covers motor vehicle parts, but as a measuring instrument, a temperature sensor should be classified under Chapter 90, unless it is a dedicated part of a motor vehicle and does not constitute an independent instrument. Does it independently complete temperature measurement? Is it electronic rather than liquid-filled? Does it have a signal output function? Has it not been classified as an electronic component under Chapter 85? Does it meet the instrument definition of 9025?

Why is a vehicle-mounted temperature sensor classified under 9025 rather than Chapter 85? Because the core function of a vehicle-mounted temperature sensor is to measure temperature, it belongs to temperature measuring instruments and conforms to the description of heading 9025. Chapter 85 mainly covers electrical and electronic components such as thermistors, but if they are packaged as sensors and have a temperature measuring function, they are preferentially classified under Chapter 90. According to the General Rules for the Interpretation of the Harmonized System, function determines classification. How can it be determined whether a vehicle-mounted temperature sensor should be classified under 902519 or 902511? 902511 applies only to liquid-filled thermometers, such as liquid-in-glass thermometers. Vehicle-mounted temperature sensors usually use electronic principles such as thermistors or thermocouples and are not liquid-filled, so they should be classified under 902519. If the sensor is liquid-filled, it is classified under 902511, but this is very rare in the vehicle field. What key elements must be provided when declaring a vehicle-mounted temperature sensor? Product name, use, working principle, brand, model, measurement range, output signal type, etc. must be provided. Among these, the working principle and use are key to classification and should be filled in accurately, such as "thermistor type" and "for measuring engine coolant temperature." If a vehicle-mounted temperature sensor is an original part of an imported automobile, can it be classified as an automobile part? No. Even if imported as an automobile part, as long as its function is temperature measurement, it should be classified under 9025. According to the General Rules for the Interpretation of the Harmonized System, if a part has an independent function, it should be classified according to that function. Unless the sensor is dedicated to a certain vehicle model and cannot be used independently, it is usually still classified under Chapter 90. When searching for the HS code, what is the difference between 902519 and 902580? 902519 is a subheading that includes only other thermometers and pyrometers (not liquid-filled). 902580 is another subheading under heading 9025, including combinations such as barometers and hygrometers. If the goods only measure temperature, they should be classified under 902519; if they have multiple measuring functions, they may be classified under 902580. For cross-border e-commerce sales of vehicle-mounted temperature sensors, how should the HS code be determined? First confirm the product functions: whether it measures temperature independently and whether it is electronic. Then consult the tariff schedule; 902519 is a common classification. It is recommended to provide detailed product descriptions, consult a customs broker, or use the customs classification advance ruling service to avoid customs clearance problems caused by classification errors. After a vehicle-mounted temperature sensor is classified under 902519, how can the tax rate be checked? Tax rates vary by country, trade agreement, country of origin, etc. The latest tax rate can be obtained through the official website of the customs administration, tariff query platforms, or by consulting a customs broker. This article does not provide specific tax rate figures; please refer to official publications. If a vehicle-mounted temperature sensor has a display device, will the classification change? If it has a display device, it is still classified under 9025 because its core function is still temperature measurement. However, if the display device constitutes the main function, such as a temperature recorder, it may be classified under another subheading of 9025 or 9031. Judgment should be made based on the specific function; it is recommended to provide product information and consult professionals.