How can we choose the high-end direct touch switch in many products in the market? The method of selection has become an important issue. The details are described in detail below.
1, the appearance is divided into the outer frame, the inner frame, the functional parts. The inner and outer frames of the good touch button switch are all PC material. The PC material is named polycarbonate, commonly known as bullet proof adhesive. It has the characteristics of flame retardancy, anti distortion, impact resistance, dyeability, and appearance lubrication. Generally speaking, the outstanding one behind the switch is the work. If it is a white 8 Chengdu is PC, if it is black, we should pay attention to the understanding of the guide, because the PC is white, and of course, it does not remove it with black yeast.
2, then the function in the inside should be opened to see, I probably say, I do not understand, no contact, after the use of the functional parts, there is a seesaw, we call him to warp, usually good switch is no slide plate, the better are slipping warping board, warp a silver white contact, the head of a silver white contact, Light touch key switch is on him to turn off the current, good switch contacts are silver alloy, some are silver nickel alloy, some are silver chromium alloy, no matter what alloy, the intention is to enhance the hardness of silver, increase its melting point to avoid the current too big to melt silver; and warping plate is carrier, is the load current used. It's raw material is tin and phosphorus bronze, you can also ask the clerk, he wants to say it is brass, do not buy, this is because it is the layout of the inside, you can not see in the time of purchase, so I probably say, you are able to ask the clerk.
3, the hole in the socket from the outside to see if there is black or white things to cover the copper in the inside, then it proves that there is a maintenance door layout, can hold a hairpin or hard thing to poke a single hole in a single hole, not to go in to prove that there is a self locking device, it is a good socket, if there is no maintenance door, it must not buy, the so-called miscellaneous brand The maintenance doors are plastic, the high quality products are all reinforced nylon, fireproof and durable, the family has a child's special attention, the maintenance door can avoid the child cunning bucket door. This is very important.
4, again look at its wiring method, now the best wiring method is to select the fast wiring method, the use of the card wiring method, that is, the line stripping out of the screw, directly inserted into the switch rear connection holes can be, we may feel that there is nothing, and the user has no contact, only the electrician convenience, But the wiring method can detect the electrical safety of the switch, not negligence; we can use the general double hole platen layout can also be seen, this can be seen from the appearance, you turn over the switch, look at the back of the Jack out that some, that is the utility part, he has a few holes, you look down from the hole, if you see one A screw and a small board with two holes on one side and a few millimeters to several millimeters of marks around the holes prove this layout.
This is the way to choose the high-end direct touch switch.