1. Hey, isn’t this thing just a glowing board?

Friends who are new to LED displays may have this question:​ ​“Doesn’t a monochrome screen just display red, green and yellow? Now that we are in the color era, why do people still buy it? ”​ ​ Hey, don’t say it yet! I went to the mall last week and saw the green sign screens at the safety exits, the red bus schedule screens at the subway stations, and even the promotional price tags at the bun shop were using LED monochrome screens - this stuff is much more important than you think!

To put it bluntly, the LED monochrome screen is like an old-fashioned radio at home. Although it has a single function, it is better than​ ​“Dedicated and resistant”​ ​. For example: A bus station in a third-tier city uses a red LED screen as a shift reminder. It has been running 24 hours a day for 6 years, and the number of maintenance times has been zero! Color screens cannot compare to this durability.

Two and three major scenes tell you why it is necessary

1. ​​Big power saver​ ​: A 1㎡ red LED screen consumes ≈ 3 light bulbs (about 36 watts), which is 1/7 of a color screen.
2. ​​See far away​ ​: In an outdoor environment, the viewing distance of a monochrome screen is 30-50 meters longer than that of a color screen.
3. ​​Extreme environment survival expert​ ​: It still works normally from -30℃ to 80℃, but the color screen may "go on strike" below 0℃.”

Think about it, why do the variable information boards on the highway all use red and yellow monochrome screens? There was a heavy snowstorm in the north last winter. The yellow LED warning screen on a certain highway section could still display normally at -25°C, while the color screen at the same location had already turned black due to the cold.

3. Three consecutive questions for beginners to select screens and avoid pitfalls

​​Q1: The price difference is several times, is the more expensive the better? ​ ​
wrong! It is enough to look at these two parameters:

• ​​Brightness level​ ​: For outdoor use, choose ≥6500cd/㎡ (can be seen clearly under the bright sun)
• ​​Protection level​ ​: IP65 is the basis (dustproof and splashproof)

​​Q2: I heard that it is easy to burn the screen? ​ ​
That was the old almanac from ten years ago! Now mainstream products are available​ ​“Pixel rotation”​ ​Function. For example: a chain drugstore uses a red screen to display promotional prices, and automatically adjusts the brightness difference by 0.1% every day. It has been used for 5 years without any residual images.

​​Q3: What special preparations are required for installation? ​ ​
Remember three don’ts:
❌ Do not install it in the vent (dust is LED killer)
❌ Do not touch the screen directly with an iron frame (temperature differences may cause deformation)
❌ Don’t adjust the voltage randomly by yourself (look for the 5V DC power supply)

4. Hidden skills that only experts know

Here’s a real case: Last year, an Internet celebrity hotpot restaurant used green LED screens for menus, but customers reported that they lost their appetite. Later, it was replaced with an orange screen, and the unit price per customer increased by 15% that month. Did you see that? ​ ​There is a mystery in color selection​​：

• Red: Stimulates consumption impulse (suitable for promotional information)
• Green: Relieves anxiety (suitable for hospitals and government affairs halls)
• Blue: Enhance trust (suitable for banks and stations)

If you are not sure, here is a stupid way: go to the building materials market and ask for a few sample boards of different colors and try them in the actual scene for three days. It is much more effective than looking at the parameter table!

5. Sharing of personal blood and tears lessons

When I was choosing an LED price tag screen for my convenience store, I was almost fooled into buying a color screen. Fortunately, the screen installer told the truth:​ ​“If you want to be a rainbow every day, buy a color screen. If it displays 'Today's Special Offer', the monochrome screen will last you ten years! ”​ ​ As a result, the red monochrome screen has been used for three years. Apart from dusting it twice, I didn't worry about it at all.

Finally, I would like to say something from my heart: Don’t look at the various high-tech display screens flying all over the sky now.​ ​“Specialize in doing things”​ ​That's the last word. Just like we don’t know how to cut clothes with a kitchen knife, we also need to pay attention to the appropriateness when choosing a display screen. Next time you see those plain and simple single-color LED screens, don’t underestimate them!

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