1. What are the functions of door switch, limit switch, position switch and door lock switch?
The * * * feature of these switches is to control the switch value. Gated switch is to control the positive and negative switching values of the rising and falling motor, so that the motor can be turned on or off. The limit switch gives the switch value to stop the motor when the motor reaches this position; The position switch gives the position a switch signal to make it do some actions, or stop, or move, or turn, etc. The door lock switch and the door control switch should be the same thing.
Second, how to choose the gating switch
Look at the quality. The quality of switches and sockets is related to the safety of household electricity, and some products certified by authoritative testing institutions such as Electrotechnical Commission are reliable. Consumers can ask the salesperson about it, and it would be better if they could provide a copy. At the same time, you can also ask about the internal materials of switches and sockets. The conductive parts of high-quality products should use phosphor bronze, and the contacts should use composite silver.
Second, look at the feel. The switches with good quality are mostly made of advanced materials such as bulletproof rubber, which have high fireproof performance, moisture-proof performance, impact resistance and smooth surface.
Look at the structure Some imported or joint venture products cancel the traditional screw pressing and adopt the pressure plate terminal, which can increase the contact area of the conductor, improve the conductivity and avoid the screw crushing the core wire, and can be used for single-core and multi-core conductors.
Fourth, look at the price. Domestic switch sockets are low in price, but few are excellent in quality; The prices of imported brands are mostly in the tens of yuan. Joint venture products are a good choice. The quality, function and style are almost the same as those of imported products, but the price is only half.
Five look at the brand. We encourage you to choose famous brands. Because the quality of the switch is related to the normal use of electrical appliances and even the convenience of life. Most brands will make effective promises to consumers, such as "service life 15 years" and "guaranteed life 12 years".
Sixth, look at the service. As far as possible, go to the store or point of sale designated by regular manufacturers to buy and ask for invoices, so as to ensure that you can enjoy after-sales service in the future.
Seven, look at the logo. Pay attention to the signs on the switch socket base, including 3C certification and rated current and voltage.
Eight look at the packaging. There should be a clear manufacturer's address and telephone number on the product packaging, with instructions and certificates.
What we recommend above is a special kind of door-controlled switch. As the name implies, the common door-controlled switch is installed in the refrigerator. On the one hand, when we open the refrigerator, the lighting inside will automatically light up, which is because of the role of the door-controlled switch. On the other hand, we can know that the door-controlled switch can choose a variety of sizes, specifications and styles. In fact, you can choose a reliable one, and I believe you can also achieve satisfactory results and ultimate goals, or you can learn from it.
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