Alas, have you noticed it? Now the streets are full of LED screens, but why are the screens in some stores as clear as mobile phone screens, and some look like mosaics? Last month, my cousin opened a milk tea shop and spent 30,000 yuan to buy a dot screen. As a result, he couldn't see the words clearly during the day, so he was so angry that he almost smashed the screen. Today we will talk about this. We will ensure that we don’t speak professional terms, but we will talk about some practical things that novices can understand.

1. The first lesson of screen selection: Understanding parameters is ten times more important than bargaining

To be honest, when I helped my friend choose an LED screen for the first time, I was stunned when I saw the parameter table - what do the numbers P2, P3, and P4 mean? Later I understood it and found out that​ ​The numbers behind P represent the pixel pitch, and the unit is millimeters​​. Simply put:

• ​​P2.5​​: Suitable for viewing within 5 meters (such as shopping mall counter)
• ​​P4​​: Suitable for about 10 meters (store sign)
• ​​P6​​: Suitable for 20 meters away (large screen on the roof)

A restaurant owner complained to me that the P6 screen he bought on Taobao was installed on a 5-meter-wide store. As a result, when you look closer, it feels like looking at an old game console. So,​ ​Buying a screen is not buying clothes, size is more important than style​​。

2. Price fog: What is the gap from thousands to hundreds of thousands

I know you want to ask the most: "How much does this thing cost?" " But the price of LED dot matrix screen is the same as the base of hot pot, and the price difference can be ten times different in different ingredients. Let's talk about three situations:

​​Entry-level (30,000-80,000)​​：

• Suitable for small shops under 50 square meters
• Commonly used P4-P6 specifications
• Average daily use of less than 8 hours
• Note: Be sure to choose an automatic brightness adjustment, otherwise you have to manually adjust the brightness on cloudy and sunny days.

​​Commercial grade (100,000-300,000)​​：

• Special for shopping mall atrium/office building lobby
• Must bring IP65 waterproof (especially rainy areas in the south)
• Case: A chain gym used a screen with a cooling system, but it has not failed in three years

​​Engineering grade (500,000+)​​：

• Airport/Sports Stadium
• 24 hours uninterrupted operation
• Focus on the cooling structure and power supply redundancy design

3. Guide to avoid pits: If you don’t pay attention to these three details, you will regret it.

Last month, a fan cried and told me that the screen would appear in half a year after it was used, and the repair fee was more expensive than buying a new screen. Remember these bloody and tears lessons:

1. ​​The lifespan of the lamp beads needs to be asked clearly​​：

   • Qualified product lifespan ≥50,000 hours
   • Use inferior glue for inferior products, which will turn yellow at high temperatures
   • Test method: open the screen continuously for 72 hours to see if there are any dark spots

2. ​​Protection level cannot be saved​​：

   • Outdoor screen at least IP65 waterproof
   • IP67 is required by sea/high humidity areas
   • The most exaggerated thing I have ever seen is the mushrooms on the back of the screen...

3. ​​Control cards need to be natively matched​​：

   • Don't buy second-hand control cards to save money
   • Missing match will cause splash screen/stutter
   • Say important things three times:​​Need original! Need original! Need original! ​ ​

4. New black technology: You may not know these functions

There are some new technologies in the industry now, and the bosses who have used them say they are really good:

• ​​Intelligent photosensitive system​​：
  The screen will automatically brighten and darken with the ambient light, saving 30% power than manual adjustment

• ​​Pre-maintenance design​​：
  You can change the module without disassembling the entire screen, and the maintenance time is reduced from 2 days to 2 hours

• ​​Naked eye 3D effect​​：
  Especially suitable for jewelry stores and car showrooms, there will be a three-dimensional suspension when playing specific content

A friend who is a trendy brand told me that his store has a screen with dynamic capture. When customers try on clothes, the screen will show the virtual outfit effect, and the conversion rate will be doubled directly. This thing sounds mysterious, but in fact the technology is already very mature.

5. Personal suggestions: After-sales service is more important than product

After working for so many years, I have seen too many people fall into after-sales service. Let me tell you a real story: On a typhoon last year, water was injected into the outdoor screen in a supermarket. The supplier brought the backup module to the door the next day, and it was done in two hours. What is the key? There are 30 service outlets across the country, and engineers are on standby 24 hours a day.

So, please ask these questions before placing an order:

1. How long is the warranty period? (The industry standard is 2 years)
2. Are there any local repair points?
3. How long does it take to arrive at the scene after a sudden failure?
4. Do you need an extra fee for software upgrades?

Finally, let’s say something heart-wrenching: buying an LED dot matrix screen is the same as buying an air conditioner.​​Three points for products and seven points for services​​. Don’t look for small workshops with greed for cheapness. If something goes wrong, you won’t be able to find someone even if you cry. Nowadays, some large manufacturers can provide one-stop service from design to installation, and even help you with the playback content. This is called worry-free and effortless.

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