Why! Recently, an old classmate called me and asked urgently: "We need a big screen for events in the square. Where can I find it?" " This question really stopped me - now the streets are full of LED screens, but I really need to find a reliable one with a lot of knowledge!

1. First understand: What are the special requirements for using screens in squares?

I witnessed a tragedy with my own eyes last month: during the anniversary celebration of a shopping mall, the screen was as dark as a fog in broad daylight, and passers-by were too lazy to look! Later I found out that they rented a screen​ ​Outdoor brightness is only 3000cd/m²​ ​, can't bear the sunshine at all. Here are the key points:

• ​​The brightness must be strong enough​ ​: At least 4000cd/m² is required to start, and 7500cd/m² can ensure clarity under the scorching sun.
• ​​Waterproof and dustproof are the bottom line​ ​: Look for the IP65 protection level, you will still be as stable as a rock in a rainstorm.
• ​​The viewing angle should be wide enough​ ​: Horizontal 160° + vertical 140°, you can see clearly even when standing in a corner

(Secretly speaking: The most awesome screen I have ever seen, it worked continuously for 72 hours with no faults in heavy rain. It is said that some military-grade packaging technology was used)

2. A big PK of the advantages and disadvantages of the three major channels for finding screens

1. ​​local advertising agency​​

   • Advantages: Can see the prototype on site
   • Pitfalls: 80% of them are second-hand refurbished goods. Remember to take them apart to check the date of the power module.

2. ​​Direct supply from factory​​

   • Focus on checking three certificates: ISO9001, CCC, CE
   • It’s best to wear a belt​ ​24-hour technical support​ ​Yes, last year’s New Year’s Eve event broke down at 2 a.m., and engineers were on hand to make repairs within 20 minutes.

3. ​​Online rental platform​​
   Be careful if the price on a certain treasure is as low as 5 yuan/㎡/day! Personal experience:

   • The so-called P4 screen is actually modified from P6
   • "The video played on the high-definition screen is all mosaic

3. Five clauses that must be adhered to in the contract

1. ​​Brightness guarantee​​
   It states that "the brightness will not be lower than 90% of the nominal value during use". The worst screen I have ever seen decayed to 60% in three days.

2. ​​accident compensation​​
   The case of being compensated RMB 80,000 for water damage on a rainy day happened around me! Now all smart people require​ ​Waterproof test report​​

3. ​​Shipping Responsibility​​
   Focus on these two items:

   • Who is responsible for transportation damage?
   • How to calculate installation timeout

4. ​​Accessories list​​
   Receiving cards, power cords and other inconspicuous things, if a whole screen is missing, the whole screen will have to be replaced.

5. ​​After-sales service​​
   It must be written "fault response ≤ 2 hours". One company's engineers are always on call with a backup screen. This is really reliable.

4. Exclusive guide to avoid pitfalls: These details are deadly

1. ​​Don’t be fooled by “free designs”​​
   A company said it would make renderings for free, but in order to play 4K videos, it had to pay extra for transcoding services, which cost an extra five thousand dollars.

2. ​​Be wary of hidden charges​​
   Installation fee, disassembly fee, cleaning fee...the most exaggerated surcharge I have ever seen accounts for 40% of the total price.

3. ​​The influence of temperature is beyond imagination​​
   Attention friends from the north: some screens will stop working at -10°C, so you have to choose the operating temperature.​ ​-20℃~60℃​​model

4. ​​Content adaptation is a science​​
   The 16:9 film source is forced onto the 32:9 curved screen, and the picture is so distorted that even my mother doesn’t recognize it.

Let me tell you, choosing a square LED screen is like looking for a partner.——​ ​Suitability is a hundred times more important than cheapness​ ​! Recently I have discovered a new trend: many manufacturers have begun to engage in "hourly rental", which is really good news for short-term activities. Remember to ask this question next time you rent a screen, why not use it if you can save money? Do you think this is true?

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