Have you ever had this experience? If you want to install an advertising screen for the mall, hundreds of manufacturers will pop up after searching the Internet, and the quotations range from 3,000 to 30,000 per square meter. My friend just stepped on a pit last month - I bought a P4 screen from a certain store at a cheap price. I found that the brightness was not enough at all, and my eyes hurt in broad daylight. Today we broke up and talked about how novices avoid these reefs.

​​Buying an LED screen is like finding a partner and you have to look at the measurement data"​​
Don’t be fooled by the “high-end customization” in the words of salesmen. What we really need to focus on are these three hard indicators:

1. ​​Refresh rate​​: Walk up at least 1920Hz, otherwise the advertisements shot will be full of water ripples
2. ​​Brightness adaptive​​: 800-1200 nits of the indoor screen is enough, 4000 nits of the outdoor screen must be used as a base
3. ​​Protection level​​: At least IP65 level waterproof installed in the stadium, don't turn into a water curtain hole during the rainy season

Last week, I helped the gym owner choose interactive floor tiles screens, and found that some manufacturers put them in​​Lamp bead density​​and​​Resolution​​Mixed. Here is a tip: the smaller the number behind P, the denser the pixels. For example, the P3 screen is 4 times clearer than the P6 screen, but the price has also doubled.

Who is cutting leeks in online vs offline purchasing?

I made a comparison table and you will feel it:

There is a lesson that I have to say: Don’t believe in the "lowest price on the entire network". Last year, a customer at an exhibition bought a batch of rental screens that were claimed to be "military quality". As a result, the box began to deform when the tour was the third stop, and he is still in a lawsuit.

Four categories of suppliers that must not be touched

1. ​​Workshop with incomplete documents​​: There is no ISO9001 certification, and no one can be found if something happens
2. ​​Promising "all-inclusive" price​​: The post-installation fee and software licensing fee can give you some tricks
3. ​​Requesting to pay a deposit​​: Regular manufacturers have accounting periods, and 80% of those who are eager to ask for money have problems
4. ​​Not to mention the warranty scope​​: Focus on how to calculate the damage to the lamp beads. Some unscrupulous merchants also consider natural losses artificial

Remember to check the actual videos of the factory. Now many small workshops steal other people's production workshop images. There is a trick to test: let the other party watch videos online​ ​Automatic patch machine​​, the hand-welded lamp beads will definitely not last for two years.

After-sales service is the touchstone

Good service providers can do these:

• ​​24-hour technical response​​: The screen is black in the middle of the night and can be remotely guided to restart
• ​​Design drawing with plan​​: It’s not just selling hardware, but even the content broadcasting will help you plan
• ​​Training and teaching meeting​​: From debugging software to color calibration step by step

The most amazing thing is that I have met a service provider. After installing the screen for the chain supermarket, it will automatically send it every month.​​Brightness attenuation report​​, remind you when to do maintenance. This kind of long-term service awareness is much more worth than the few thousand yuan cheaper.

​​Editor's opinion​​
If you are struggling with which one to choose, remember this formula: "check certification, test prototypes, sting contracts, and focus on after-sales service." When it comes to a salesperson who is so singular, let him directly​ ​Brightness adjustment curve diagram​​and​​Failure rate statistics table​​Stop it - a manufacturer who is not afraid of fire refining is eager to show you these data.

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