Hey, have you ever seen the "dancing" subtitle screen at the entrance of a milk tea shop? My cousin owned a supermarket last year and bought a display screen at a cheap price. However, during the rainy season, the screen went black. When I took it apart, I saw that the circuit board was moldy. Today we are going to talk about how to choose the model of this scrolling screen so as to avoid pitfalls.

​​Let’s talk about some industry slang first.​​：

1. Those who immediately recommend the P10 monochrome screen are probably out of stock.
2. It is claimed to be "waterproof and dustproof" but does not have IP65 certification. It is safe to stop cooking when it rains.
3. If the control card slot does not have hot backup, the business will have to be shut down for three days to repair it.

There is an interesting old factory in Shenzhen that supplies convenience stores in Tokyo. Their door screen has not been replaced in Myeongdong Commercial Street in Seoul for five years. I heard that there are more than a dozen kinds of testing equipment in the workshop, and the entire process from lamp bead welding to box splicing is videotaped. Buyers can investigate and monitor the production process at any time - this kind of transparent operation is much more transparent than those who take photos of the workshop with their mobile phones.

The model is not a metaphysics, it depends on the actual demand.

Last time I helped the owner of a hot pot restaurant choose a screen, I found out something: they were all P10 models, some had brightness fade after three months, and some were still as good as new after three years. Here are four tips for you:

​​Must-see parameter list​​

Here’s a little trivia: Nowadays, high-end door screens can adjust their brightness by themselves. They can automatically reach full brightness at noon, and then reduce it to a level that’s not dazzling at night. Although this kind of smart screen is more expensive, it can save 40% on electricity bills, making it more cost-effective in the long run.

The life and death line of installation and maintenance

Have you ever seen the curved signboard screen like that of a milk tea shop? That's not something an ordinary iron frame can handle. Reliable manufacturers will provide special buckles, and two people can disassemble and assemble 50 square meters in three hours. If you encounter someone who wants to weld the bracket on site, run away!

​​A Guide to Avoiding Pitfalls​​

• Choose the one with U disk + wireless dual control, and the content can be changed even if the network is disconnected.
• A "Brightness Decay Commitment" is required, which shall not exceed 5% per year.
• The cabinet should be made of aviation aluminum, so weigh the weight - if it is too light, you will definitely cut corners.

The truth about custom services

Recently, a drugstore chain is trying to make the screen look like a red cross. Manufacturers that can really customize the product directly send out a 3D modeling team, even the reflection angle is calculated. Therefore, those who dare to take on special styles are the ones with strong power.

​​Quick questions and answers​​
Q: What should I do if the control card is broken?
A: Choose one with a hot-swappable spare card slot, and the screen will not turn off when changing the card.

Q: Will rainy days affect the display?
A: The IP65-certified screen will still work in heavy rain, but the joints must be covered with waterproof glue.

Q: How to judge the genuine material?
A: Take apart the prototype and look at the circuit board - only the solder joints as neat as a robot are reliable.

The editor finally tells the truth: Choosing a door screen is like simmering a pot of soup, you can’t rush it. Those who quoted shockingly low prices must have tampered with the lamp life or power supply. Remember, a good screen can speak for itself - if it lasts three years without fading and five years without crashing, that's its real ability. The next time you encounter a salesperson who is making a lot of noise, just ask him to show you the real-time monitoring of the workshop. You will know whether it is a mule or a horse at a glance!

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