Imported reed switch is a kind of passive electronic switch element with contacts, which has the advantages of simple structure, small size and easy control, etc. Its shell is generally a sealed glass tube, in which two iron elastic reed plates are installed, and an inert gas called rhodium is filled. Usually, two reeds made of special materials in a glass tube are separated. When there is a magnetic substance near the glass tube, under the action of magnetic field lines, the two reeds in the tube are magnetized to attract and contact each other, and the reeds will attract together, so that the circuits connected to the nodes are connected. When the external magnetic force disappears, the two reeds are separated due to their own elasticity, and the circuit is disconnected. Liquid level switches are used in reed switch, water flow switch and proximity switches, etc. A series of products can be used in reed switch, which shows the importance of importing reed switch. How should we choose to import into reed switch?
First of all, we need to judge the reed switch from three values: voltage, current and load. Generally speaking, reed switch can be divided into two specifications: low-voltage reed switch (under 00V voltage) and high-voltage reed switch (under 220V voltage), so we need to determine which specification our products choose by the voltage of this product.
Secondly, reed switch is divided into imported normally open reed switch and normally closed reed switch, and their functions are opposite, which must be made clear before purchasing.
Finally, we choose from the sensitivity of reed switch. reed switch can be divided into 10-15, 15-20, etc. The smaller the value, the more sensitive it is. If the choice is wrong, it may exceed the product and cannot move.
