Have you seen those cool advertising screens that are hard to take a blind eye? Where do these magical tools that can attract people from the crowd come from? Today we will talk about this problem that makes novice novice the most troublesome - how to choose an LED touch display screen? Don't worry, I will break the tricks that people in the industry will not tell you clearly.

A friend who runs a milk tea shop asked me two days ago: "I want to install an LED screen at the door that can order orders. The online price ranges from 8,000 to 80,000 yuan. Is this thing the more expensive, the better?" I asked. In fact, choosing a touch screen is similar to choosing a mobile phone.It depends on the real requirements behind the parameters​. For example, when using a milk tea shop, you must first withstand the wind and sun exposure, and secondly, you must allow customers to see the menu three meters away - this involves hard indicators such as brightness and waterproofing.

Let’s talk about the most serious brightness issue first. If the indoor screen is moved directly to the outdoors, it will become "blind" when the sun shines under the sun.​​Outdoor screens need to start at least 4,000 nits​, the advertising screens on bus stops are basically stuck in this line. But if placed in the shopping mall window, 800 nits is enough. There is a misunderstanding that everyone should pay attention to: it is not that the higher the brightness, the more power is consumed. Nowadays, many screens have automatic photosensitive adjustment, just like the screen of a mobile phone will automatically turn brighter and darker according to the environment.

Touch technology is deeper. Capacitive, infrared, and pressure-sensitive types sound similar, but they are quite different when used.​​Cafeterias are best for infrared touch​, you can operate it even with gloves; it is recommended to choose a pressure-sensitive screen for display in clothing stores, which is not easy to touch by mistake; if it is used for education or conferences, the capacitive accuracy is higher. However, some high-end products now rub three technologies together, and ten-point touch can prevent accidental touch, which depends on the specific budget.

Speaking of protection levels, the IP65 standard is almost ruined. But do you know? It is also IP65 certified. Some screens can be used for half a year and some have no problems when they are used on the construction site for three years. The key depends​Heat dissipation hole design​andSealing strip material​. There is a simple test method: use a strong light flashlight to stick to the screen frame. If you can see obvious gaps, the waterproofness of this screen will be questioned.

The easiest thing for beginners to be fooled is "the higher the resolution, the better". Actually​The distance between P3 and P4 is three meters away, and the distance between P3 and P4 cannot be distinguished at all.​. Like the promotional screen at the entrance of the supermarket, the P4 spacing is enough, and you can save more than 2,000 yuan per square meter. But if the jewelry store displays the window, the diamond's cutting surface details can only be displayed below P2.5, so this money cannot be saved.

After-sales protection must be even more open. The "three-year warranty" that many manufacturers actually only care about the motherboard, and the charges will still be charged if the lamp bead is broken. Need to ask clearly​Does the warranty include touch modules?​，​​Do you need to charge a car fee for your door-to-door service?​. I heard that there are manufacturers who have been in export business for more than ten years. Their engineers can fly to Southeast Asia to repair screens within 48 hours. This kind of service is really reliable.

Now let’s go back to the initial question: Is the more expensive the touch screen, the better? It's really not certain. I have seen an entry-level screen used by a convenience store chain that has not failed in five years; I have also seen a "high-end customized model" that I bought for a lot of money, but the touch failure occurred in three months. The key is​Depending on whether the manufacturer has its own production line​​，​Have you ever done successful cases of similar scenarios?​. Just like when buying a house, you need to look at the developer's qualifications, and when buying a display screen, you have to check the manufacturer's production certification and actual project photos.

Finally, let me give you a heart-wrenching suggestion: Don’t just stare at the parameter comparison table on the Internet,​Be sure to let the manufacturer provide real-life videos​​. It is best to go to their exhibition hall to poke the screen with your own hands, and try to see if you can see the picture clearly under strong light, and sprinkle a cup of water to see if the touch is still effective. Remember, a good screen can be felt by the body - the smoothness of finger strokes and the delicateness of the screen switching, these detailed parameter tables will not tell you.

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