I want to build a big outdoor led screen, how to choose? Which parameters need to pay attention to?

### I. Core Parameter Selection
1. **Brightness and visibility**
Outdoor environment requires high brightness to ensure the display effect, it is recommended to choose the brightness ≥ 5000 nits of the screen (direct sunlight areas need to be more than 8000 nits), and support the automatic dimming function to avoid glare pollution. At the same time, the viewing angle should be ≥ 140 °, to ensure a clear multi-directional viewing.

2. **Pixel Pitch**
Select the pixel pitch according to the viewing distance:
- Close range (<10 meters): e.g. P4-P6 (pixel pitch 4-6mm), suitable for scenes such as shopping mall entrances.
- Medium distance (10-50 meters): e.g. P8-P10, suitable for city main road advertising.
- Long distance (>50 meters): e.g. P16, suitable for highway billboards.

3. **Protection and weathering**
- Protection level should reach IP65/IP67, waterproof and dustproof, adapt to heavy rain, sand and dust environment.
- Resistant to extreme temperature (-30℃~+60℃), heating module is required in the north, and enhanced heat dissipation is required in the south. Coastal areas are recommended to choose anti-salt spray coating box.

4. **Resolution and refresh rate**
Resolution needs to match the screen size and content requirements, refresh rate ≥ 3840Hz to avoid dynamic content drag, gray level ≥ 16bit to enhance the naturalness of the color transition.

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### II. Installation and Maintenance Points
1. **Structural design**
- Load-bearing needs to be resistant to wind above grade 10, steel structure thickness ≥80mm, additional reinforcement is required in coastal areas.
- Modularized design to support post-maintenance and reduce disassembly costs.

2. **Heat dissipation and power supply**
- The high brightness screen needs forced air cooling or air conditioning to dissipate the heat and maintain the internal temperature -10℃~40℃.
- Dual circuit power supply design, equipped with lightning protection grounding (resistance ≤ 4Ω) and surge protector.

3. **Long-term maintenance**
- Clean surfaces regularly (quarterly) and check power cords for deterioration.
- Reserve 5% spare module for quick replacement of faulty unit.

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### III. Budget and cost control
- **Initial Cost Allocation**: LED module accounts for 60%-70%, control system 10%-15%, structure and installation 20%-30%.
- **Calculation of energy consumption**: Estimated electricity cost per square meter 300-800W, high brightness screen needs higher budget.
- **Balance between cost and performance**: choose the mid-range model with high stability when the budget is limited, and pursue features such as high refresh rate and intelligent dimming when you are generous.

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### IV. Brand and Service Assurance
- Priority is given to well-known brands such as Power Giant Color to ensure product quality and technical support.
- Verify product certifications (e.g., 3C, CE) and confirm that the vendor provides at least a 3-year warranty and quick response service.

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### V. Reservation for future upgrades
- **Modular Expansion**: Selection of an expandable box structure to facilitate subsequent increase in area or resolution (e.g. P10 upgraded to P8).
- **Intelligent interface**: 5G and AI access capabilities are reserved to support future functions such as face recognition and real-time data interaction.
- **Energy-saving technologies**: consider compatibility with solar-powered or energy storage systems to reduce long-term energy costs.

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Through the comprehensive evaluation of the above dimensions, you can accurately match the needs and purchase the outdoor LED screen with performance, durability and cost-effective. For more detailed technical parameters or installation cases, please contact us!