From the outside, we see a lot of plastic buttons on the remote control. These buttons are not dome pieces, but a medium that directly contacts the dome pieces and hands. Through this medium, we can operate n dome pieces on the remote control. There is a light on the front of the remote control, which should be called ultraviolet light, etc., also called signal light. On the back cover, we can see that there is a place where the battery is installed, that is, the conductive part. From the outside, there are three places. Of course, each of them is indispensable. Without the entire remote control, the work cannot be completed. Let's take a look at the inside of the remote.

From the inside, the remote control is just a PCB board, which is also often called a circuit board. This board can control the normal operation of the entire remote control function. There is a shrapnel on the back which is used to connect the power supply. We all know that if electronic products have no point, like scrap iron, and many remote controls are made of plastic and other materials, then even scrap iron is inferior. We can see a lot of small round particles on the front of the Pcb board. These small particles are called dome pieces. They are made of metal materials and are often called metal shrapnel. Nowadays, the dome pieces are generally made of stainless steel SUS301 or SUS304. It is made of a variety of materials. In order to increase the luster and conduction performance, it is usually treated with tin plating on it, which not only increases the luster, but also has good protection and durability.

The initial shape of the dome is convex, and it will be concave downward through a certain force. The purpose of the downward concave is to conduct electricity without contacting the circuit. The convex shape is that the initial state will not be in contact with the conduction.

Through the above introduction, what role does the dome in the remote control play?

The above introduced that the dome is a metal shrapnel. We all know that metal shrapnel has electrical conductivity, and every electronic product needs to have electricity to work, then we can understand it very well. For example, when we put the remote control on the Each button of the Button is likened to a function, and each button corresponds to a dome, when the button is pressed, it becomes conductive, and it can work when it is powered on, then this function will work or complete the work.

From here, we can understand the role of the dome. From a macro perspective, it realizes a certain function of the remote control and is the main component to complete a certain job. From a micro perspective, it realizes the conductive function and completes the power-on effect.