Alas, did you notice? The cool LED large screens in the mall sometimes have the subtitles suddenly stutter and the picture is flashing with snow. It is most likely that the controller is not in the right position! This thing is like the nerve center of the human brain, and it will drive you crazy in the wrong place. Today we will talk about - where should this "brain" of the control display be hidden to be reliable?

​​The four golden rules for position selection​​

1. ​​ Stay away from the high temperature zone​​: Never install it next to the air-conditioning unit or in a glass room with direct sunlight. The operating temperature of the controller exceeds 40℃, and its lifespan is cut in half. It is best to choose​Metal heat sink cabinet​, the ambient temperature is controlled at -20℃~35℃
2. ​Signal transmission distance​: The distance between the control and the screen should not exceed 80 meters. If this number exceeds, a signal amplifier must be installed. For example, a large screen like a stadium, the controller must be installed in the middle of the auditorium.
3. ​​Waterproof and dustproof grade​: Open-air installation must be selectedIP65 protection level​’s dedicated control box, a music festival last year caused a black screen accident due to the use of an ordinary iron box and the controller was short-circuited on rainy days.
4. ​​Convenience convenience​: Don’t seal the controller in the wall for the sake of beauty! At least 50cm×50cm operating space should be left. The access door with hinges is the most practical.

​​Four steps to install step by step​​
​Step 1: Environmental Reconnaissance​
• Touch the wall: Knock to confirm whether it is a solid wall or a light steel keel (the load-bearing bracket must be installed on the hollow wall)
• Voltage measurement: Use a multimeter to confirm that the supply voltage is stable at 220V±10%. If there is a large fluctuation, the voltage regulator must be added.
• Check the grounding: The grounding resistance must be ≤4Ω, otherwise you will wait to watch the "fireworks show" on thunderstorms.

​Step 2: Fix the cabinet​
• Bracket selection: The controller below 5 kg is fixed with expansion screws. Overweight must be welded to the angle steel bracket
• Horizontal calibration: If the level deviation exceeds 2°, the signal transmission will lose packets.
• Anti-shock treatment: When points near the road, rubber shock absorbing pads should be installed on the bracket.

​Step 3: Wiring Operation​
• Power cord: red V+, black V-, reverse smoke immediately
• Network cable: Super five shielded cables are the safest, and the crystal heads need to be waterproofed
• Emergency plan: Leave 2 additional backup signal lines, which can save lives at critical moments

​Step 4: Power-on debugging​

1. Turn on the controller first, wait 5 minutes before turning on the screen body power supply
2. Use debugging software to see the real-time load rate. If it exceeds 70%, you have to upgrade the configuration.
3. Take a slow motion video with your mobile phone and check if there is any scan line

​​Five high-frequency problems on-site tips​
Q1: What should I do if the controller is hot when I touch it?
A: Install it quickly​Axial flow fan​! The air inlet is installed at the lower part, the air outlet is facing upward, and the heat dissipation efficiency is increased by 3 times.

Q2: Is the signal always intermittent?
A: Check these three points: ① Is the network cable interfered by strong electricity ② Is the connector oxidized? ③ Is the control software version too old?

Q3: What should I do if a novices accidentally touch the control button?
A: Add the operating panelPhysical lock​! Or set the third-level password permissions and hide the basic settings menu

Q4: Will the chip burn if a sudden power outage?
A: Equipped with a UPS uninterruptible power supply! It can last for 15 minutes after power outage, which is enough to save data and shut down safely

​​Installation method comparison table​

The editor said it is heart-wrenching: the controller position is selected well, and there are fewer worries in the later operation and maintenance. The most outrageous case I have ever seen - someone installed the controller under the toilet water pipe, but the three motherboards were damaged due to leakage. Remember, this thing is just like your own router, which must be ventilated and easy to touch. Before installing the next time, compare this guide and ensure that you avoid detours for three years!

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