The waterproof and oil proof proximity switch SJA41M-3005NK from Shandong Zhuoxin Company has a one-year warranty. The packaged magnetic switch means it is induced by a magnet; Magnetism; There are several types of magnets, including rubber magnets, permanent magnet ferrite, sintered neodymium iron boron, etc. commonly used in the market. The switch is like a reed switch. Dry reed tube, also known as dry tongue reed tube, is a passive electronic switching element with contacts. It has a simple structure and small size, making it easy to control and other points. The outer shell is usually a sealed glass tube, which contains two iron elastic circuit boards and is also filled with inertia. Usually, the two pipes made of materials in a glass tube are separated. When a magnetic substance approaches a glass tube, under the action of magnetic field lines, the two huangpian inside the tube are magnetized and attracted to each other, and the huangpian will be attracted together, making the circuit connected to the node connected. After the disappearance of the external magnetic force, the two pipelines separated due to their own elasticity, and the circuit was also disconnected. Therefore, as a circuit switching device that uses magnetic field signals to control, reed switches can be used as sensors for counting, limiting, and so on (mainly used in the production of door and window magnets in Anfangxing), and are also widely used in various communication devices< Part of the product models of Zhuoxin Company: Proximity switch HQA667380BD/77K GB/T14048.10
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