Hey, I'll tell you, are you so angry that your head hurts when you are in a broken projector in the conference room recently? At a meeting, either the picture is as battered as mosaic or the color is distorted like a horror movie. At this time, you must be thinking about changing the LED screen, but turn on Taobao and search - good guy! There are from 28,000 to 280,000. This water is too deep, right? Don't worry, let's break it up and talk today.​ ​How to choose a large LED screen in the conference room​​。

1. You have to see the tricks in the parameter table

Let me tell you a real story first: My brother spent 50,000 yuan to buy a "4K ultra-clear screen" last year. After installing it, he saw that the edges of the text were jagged. Later I found out that the merchant had​ ​Physical resolution​​and​​Support resolution​​Stories the concept. Remember these three lines of life and death:

• ​​The refresh rate must be ≥1920Hz​​——Below this number, face movement during video conference is like PPT turning pages
• ​​Brightness must be good at magic​​: The conference room has floor-to-ceiling windows and choose 4000 nits to start. The closed environment is 800-1200 nits enough, which is too bright and dazzling.
• ​​Don't be greedy for pixel spacing (P value)​​: The most cost-effective choice for P2.5 in 5 meters of viewing distance, P1.5 is the most expensive

For example, a certain educational and training institution bought a P1.8 screen, but the teacher stood on the podium and watched the courseware with a grainy feeling. Later, it was replaced with P25 to save 30,000 yuan, and the effect was clearer. This is the same as the mobile phone screen - it is not that the higher the pixel, the better, it depends on the actual distance.

2. Treat special needs with special treatment and don’t waste money

If you often engage in cross-border video conferences, you have to keep an eye on it​​Signal delay​​. Last year, a foreign trade company bought a normal screen, and the voice screen was not synchronized with German customers when they were having a meeting, so embarrassing that it could cut out three bedrooms and one living room. Later, I changed the model with dual-channel backup. It was a bit expensive, but I never had any trouble.

Let’s talk about some practical configurations:

1. ​​Intelligent light sense​​: The sun is dazzling in the morning and the warm color temperature will be automatically adjusted during the evening meeting.
2. ​​Split screen display​​: Put the PPT on the left and the video conference on the right, the host does not need to switch back
3. ​​Emergency interface​​: HDMI+Type-C dual backup, if the computer interface is broken, it won’t be caught.

The most amazing configuration I have ever seen is from a government conference room​​Anti-peep mode​​——The leader turns on when he speaks, and the screen content cannot be seen at 45 degrees on the side, so the safety factor is directly full.

3. The installation and maintenance pit is more fatal than buying a screen

There was a tragic case last month: a company bought a screen worth 200,000 yuan, but it was installed on a gypsum board wall. After using it for three months, the overall screen fell by 3 cm, and the repair fee was more expensive than buying a screen. Here is the key point:

• ​​Load-bearing walls can be installed​​: Weight of 40-60 kilograms per square meter, light steel keel wall give up as soon as possible
• ​​Space to dissipate heat​​: Leave at least 30cm left and right, and leave a 50cm ventilation channel behind
• ​​Don't make verbal promises after-sales service​​: The response time must be written in black and white, and it is best to choose one with 24-hour technical support.

There is a restaurant chain brand that is very smart - the manufacturer is required to stick it on the back of the screen​​Repair QR code​​If there is any problem in the branch, scan the code to report the repair, and monitor the headquarters backend in real time, so that the service is in place.

4. Soul questioning: Is imported screen really good?

To be honest, the technology of domestic large manufacturers is no longer inferior to foreign countries. Do you know why Japanese and Korean customers specifically specify Chinese screens? Because ours​ ​Low bright high gray technology​​In the dark light environment of the conference room, the color transition is more delicate than the imported screen. Let me talk about a cold knowledge: 83% of the world's LED modules are made in China, and the so-called imported screens you buy are probably from Dongguan.

When choosing a manufacturer, remember to look at three times:

1. ​​Depend on the scale of the production base​​: The monthly production capacity is less than 10,000 square meters, and ordering in peak season can kill you
2. ​​Check international certification​​: CE and CCC are just the beginning, only those with Class1 fire protection certification are reliable
3. ​​Ask for implementation cases​​: Those who have done government projects usually understand the pain points of the conference scenes better

The editor tells some truth about offending people

Finally, I would like to give you a tip - when you go to the manufacturer to go straight to their​​Aging test workshop​​. Serious manufacturers will light up the module for 72 hours in a row, eliminating three-tenths of the bad products. Then touch the seams of the frame of the screen, if the workmanship is poor, it can scratch your hands.

Remember, good screens are saved. Choose the right manufacturer and you can save a car after five years of maintenance. The next time the salesperson blew the parameters to you, I will just pass three questions: Can I demonstrate the video conference on the spot? Do you dare to sign a delayed compensation agreement? How many maintenance engineers are there? After asking these questions, it is a mule or a horse that reveals its true form immediately!

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