The Difference Between H4 And H7
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H7 is the model of the bulb. Models are H1, H4, H3, H7, etc. 1.H1 is a high beam bulb; 2.H3 is a fog light; 3.H4 is a light bulb with both far and near beams; 4.H7 is mostly a low beam bulb, but some are also used as a high beam, such as AUDIA6. Among them, H1 is a single-wire one-legged light bulb, H7 is a single-wire two-legged light bulb, and H4 is a double-wire three-legged light bulb. The low beam and the high beam are all in one light bulb. Classification of xenon lamps are divided into six types according to the form of bulbs: high beam with lens, low beam with lens (the above two lamps are generally used in the original xenon lamp system such as PST, AUDI, etc.) Under normal circumstances, the bulb Models: H1 (for high-beam bulbs), H3 (for fog lights), H4 (for high-beam bulbs), and H7 (mostly for low-beam bulbs, but also for high-beam lights, such as AUDIA6).
The following is the difference between h4 and h7 bulbs: 1. H4 and H7 are two different types of bulbs, with different functions and different structures. H4 is generally used as a high beam and a low beam, and H7 is generally used as a low beam. 2. H4 has three terminals with dual filaments for far and near light, and H7 has two terminals. 3. H7 has a large irradiation range and a short irradiation distance, but it is not easy to detect objects with dark colors that are still on the road. The H4 low beam and high beam are all in one bulb, which doubles as two uses. The following is a related introduction: 1. Car headlights, also known as car headlights and car LED daytime running lights, as the eyes of a car, are not only related to the external image of a car owner, but also related to driving at night or in bad weather conditions. close contact. 2. Car light bulbs are used to ensure driving safety when the car is driving at night, and belong to automotive supplies. Poor lighting conditions can easily cause eye fatigue, and can not provide the driver with effective illumination brightness and area. Good car light bulbs can provide higher brightness and more A good field of vision can also improve driving comfort and safety, ensure driving safety, and make driving full of confidence.Haining Suez Car Lights Co., Ltd. is a car Bulb Manufactures, the main products are H4 car bulb and other products, welcome to inquire!