Chapter 85 covers electric motors, electrical equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories thereof. This chapter includes various electric motors, generators, transformers, batteries, switches, relays, integrated circuits, sensors and other electronic components, as well as household appliances, communication equipment, etc. Vehicle-mounted electronic sensors, as electronic components, fall within the scope of this chapter. Heading 8543 covers electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter. It includes: particle accelerators, signal generators, electroplating and electrolysis equipment, electronic cigarettes, and various sensors, detectors, etc. Vehicle-mounted electronic sensors, because their functions are specific and they are not explicitly named in other headings, are classified under this heading. First 2 digits 85: indicates Chapter 85, the chapter on electrical machinery and equipment. Digits 3-4, 43: indicates heading 8543, referring to electrical machines and apparatus having individual functions, not specified or included elsewhere in this chapter. Digits 5-6, 89: indicates subheading 854389, a specific subheading under heading 8543, covering other electronic sensors not elsewhere specified or included. Note: under heading 8543 there are also subheadings such as 854370 (other apparatus) and 854390 (parts). Vehicle-mounted electronic sensors have individual functions and are used to detect vehicle speed, temperature, pressure, etc., but are not specifically named in other headings (such as 8541 semiconductor devices, 8542 integrated circuits, 8544 insulated wire and cable), and are therefore classified under 8543. If the sensor is in the form of an integrated circuit, it may be classified under 8542; if it is a simple switch, it is classified under 8536.

Product name: The Chinese and foreign-language name of the declared commodity, which should accurately reflect the characteristics of the commodity, such as "vehicle-mounted electronic sensor". Use: Explain the application field of the sensor, such as "used in automobile engine control systems to detect temperature". Function: Describe the main function of the sensor, such as "converting temperature signals into electrical signal output". Working principle: Explain the physical or chemical principle of the sensor, such as "based on the thermistor effect". Brand: Fill in the sensor brand, such as "Bosch", "Continental", etc. Model: Fill in the specific model, such as "0261230123". Output signal type: Explain the form of the output signal, such as "analog voltage signal", "digital signal". Product name: vehicle-mounted electronic sensor; Use: used in automobile engine control systems to detect intake air temperature; Function: convert temperature changes into voltage signal output; Working principle: based on the negative temperature coefficient thermistor effect; Brand: Bosch; Model: 0261230123; Output signal type: analog voltage signal (0-5V). Mistakenly classifying the sensor under 8542 integrated circuits, resulting in incorrect classification. Incomplete filling of declaration elements, lacking working principle or output signal type. Confusing vehicle-mounted sensors with industrial sensors, without indicating the vehicle-mounted use.

Core basis for classification: 1. Whether the sensor has an individual function; 2. Whether it is specifically named in other headings; 3. Whether it belongs to "other electrical equipment" under 8543. Vehicle-mounted electronic sensors usually have individual functions and are not named in headings such as 8541 and 8542, so they are classified under 8543. If the sensor is in the form of an integrated circuit, it should preferably be classified under 8542. 8542 Integrated circuits: 8542 covers integrated circuits, while 8543 covers not elsewhere specified apparatus with individual functions. If the sensor exists in the form of an integrated circuit, it should be classified under 8542; if it is an independent sensor composed of discrete components, it is classified under 8543. 8536 Switches, relays, etc.: 8536 covers electrical switches and protective devices. If the sensor is used only as a switch (such as a pressure switch), it should be classified under 8536; if it outputs a continuous signal, it is classified under 8543. 8541 Semiconductor devices: 8541 covers semiconductor diodes, transistors, etc. If the sensor is based on semiconductor principles but is an independent device, it is still classified under 8543; if it is a semiconductor device itself, it is classified under 8541. 9025 Thermometers, pressure gauges, etc.: 9025 covers measuring instruments. If the sensor is a complete measuring instrument, it is classified under 9025; if it is a sensor that converts a physical quantity into an electrical signal, it is classified under 8543. Does the sensor have an individual function? Is it specifically named in other headings? Does it exist in the form of an integrated circuit? Is the output signal a continuous quantity or a switching quantity? Is it specially designed for automobiles?

Why should vehicle-mounted electronic sensors be classified under 8543 rather than 8542? 8542 is integrated circuits, while vehicle-mounted electronic sensors are usually composed of multiple discrete components and have individual functions, so they are not integrated circuits. According to the General Rules for the Interpretation of the Harmonized System, electrical equipment with individual functions not named in other headings is classified under 8543. How can it be determined whether a sensor has an individual function? Individual function means that the sensor can independently complete the conversion from a physical quantity to an electrical signal without relying on other equipment. For example, a temperature sensor converts temperature into a voltage signal, which means it has an individual function. Is it necessary to provide the working principle of the sensor when declaring? Yes, the working principle is an important declaration element and helps customs determine classification. For example, whether it is based on the thermistor effect or the Hall effect may affect classification. Is there a difference in classification between vehicle-mounted sensors and industrial sensors? Classification is mainly based on function and principle, not use. However, if a sensor is specially designed for automobiles, it may involve other headings (such as 8708 automobile parts), and it needs to be determined according to the specific situation. If a sensor contains an integrated circuit, how should it be classified? If the core of the sensor is an integrated circuit and its function is realized by the integrated circuit, it may be classified under 8542. But if the integrated circuit is only a component, the sensor as a whole is still classified under 8543. What common types of sensors are under subheading 854389? They include temperature sensors, pressure sensors, position sensors, speed sensors, etc., as long as they are not named in other headings and have individual functions. How can classification errors be avoided during customs declaration? It is recommended to provide detailed product manuals, circuit diagrams, working principles and other materials, and to refer to the "Explanatory Notes to the Harmonized Commodity Description and Coding System" for classification. If necessary, advance classification ruling may be applied for. How can tax rates be checked? Tax rates may change. The latest tax rates can be checked through the official website of the General Administration of Customs, the China International Trade Single Window, or by consulting a customs broker.