Are all the bosses worried about the new LED scroll screens installed in shopping malls? This thing seems to be all over the street, but when it comes to purchasing it, it feels like walking into a maze - a search on the Internet has prices ranging from 3,000 to 230,000. The manufacturer has hyped it up, but after installation, it is either not bright enough or always crashes. Today we are going to open up the door to this industry and teach you step by step how to choose the right equipment.

​​The first level: Choosing a channel is like finding a partner​​
Buying LED screens now is like shopping for clothes online. There are so many online and offline channels that it is dizzying. There are three common ways:

1. E-commerce platform wholesale: The price is transparent, but the after-sales service is like opening a blind box. A friend bought a screen from a certain platform. After three months, color patches appeared. The customer service asked to send it back for repair. As a result, the shipping cost was more expensive than the maintenance fee.
2. Factory direct sales: You can get 15%-20% off the price, but you have to be careful of second-hand dealers pretending to be manufacturers. There is a trick to identify it - the one who dares you to video factory inspection is the real source.
3. Integrated service provider: worry-free but with a price increase of about 40%, suitable for owners who are in a hurry to start business

​​Level 2: Understand the parameters without suffering any disadvantages​​
Last week, I helped a relative check the screen. The salesperson said, "Our P3 screen is clearer than other companies' P2.5 screen." I almost deceived the person. Remember these hard indicators:

• ​​point spacing​ ​: Just choose P2.5-P4 indoors in shopping malls. You can’t see particles at all when you stand 3 meters away. There is no need to pursue small spacing.
• ​​brightness​ ​: The atrium location should have 500-800nit, and the window area should start with 1200nit, otherwise it will reflect into a mirror during the day.
• ​​refresh rate​ ​: Promotional animations must be at least 1920Hz, otherwise the video will be rippled.
• ​​Protection level​ ​: The dining area must be at least IP43. Don’t let oil fumes get into the circuit board.

​​The third level: installation and maintenance hidden secrets​​
The most outrageous case I have ever seen was that after the screens were installed in a shopping mall, the fire department came to investigate the next day and complained that the escape routes were blocked. Here are three pitfalls that are easy to step into:

1. Load-bearing problem: The full-color screen exceeds 30 kilograms per square meter, and the floor of the old shopping mall needs to be reinforced.
2. Heat dissipation design: Don’t believe the “natural heat dissipation” nonsense. Installing two convection fans can extend the life by 3 years.
3. Maintenance routine: The contract must state that "the dead light rate shall not exceed 0.3% for three years." Don't be fooled by the empty promise of "five-year warranty"

Speaking of price, the current reasonable price for a 1 square meter P3 screen is between 8,000 and 12,000. If the price is lower than 7,000, either second-hand lamp beads are used, or the driver chip is cut corners. Recently, there is a new technology called common cathode drive, which can save 30% of electricity and reduce the temperature. It is recommended to give priority to this energy-saving model.

​​exclusive data​ ​: Among the LED screen failure cases in shopping malls in 2024, 67% are due to power problems and 19% are control system bugs. So don’t just look at the price of the screen, ask if the power supply is from a big brand like MEAN WELL/MOSO, and if the control system has a dual backup function. Next time you see a salesperson claiming "military quality", just ask him to remove the power supply cover and inspect the product to see if it is right.

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