The use of industrial control relay in our homes is still very important, which can provide the most basic living guarantee for home life, but we must also pay attention to the use of relays to avoid unnecessary troubles. So what is the function and principle of the relay, as well as the correct use of the relay, do you understand it? Now let's take a look.

What is the function and principle of the relay?
The function of the relay: It can increase the scope of the entire circuit, and achieve the purpose of controlling the high-power circuit so that it can operate automatically. The principle of the relay: When the input quantity is at a fixed value, the working state can be changed, and the working state can be changed to avoid accidents.