Don't rush to pay! Understand these three sets of parameters first

Are you anxious to arrange a shopping mall event? Stop first! You must understand these before buying LED three-color screens:

• ​​Refresh rate ≥1920Hz​ ​: Below this value, all the videos taken are corrugated
• ​​Brightness adaptive​ ​: Indoor and outdoor universal models must be able to automatically switch 800-5000cd/m²
• ​​Protection level IP54 starts​ ​: At least spray-proof water used in shopping mall atrium

Last year, a chain supermarket suffered a loss - I bought non-standard products with cheap prices, but the screen reflected severely on the opening day and the promotional information could not be seen clearly. Later, professional-grade equipment was reinstalled.​ ​Activity conversion rate rose by 23% directly​​。

The ultimate comparison of online vs offline procurement

I have a cold knowledge: some manufacturers now support it​ ​AR virtual inspection​ ​, you can see the 3D model of the device by scanning the QR code on your mobile phone, which is clearer than seeing the real thing. A catering group used this trick to save 15 days of inspection time.

Price Trap Pit Protection Guide

​​The key point is here​ ​! These hidden expenses in the quotation can swallow 30% of your budget:

1. Steel structure reinforcement fee (accounting for 12-18% of the total amount)
2. Signal enhancer rental fee (starts from RMB 200 per day)
3. Color temperature calibration service fee (single time RMB 1500+)

Teach you a trick: ask the supplier to provide it​ ​All-inclusive price contract​ ​, package and price for transportation, installation and three years of maintenance. A chain of cinemas operated like this and saved 78,000 yuan in a single project.

Installation and acceptance of life and death line

Don't rush to sign when receiving the goods! Click this list to check item by item:

• No bad points when booting (full screen red, green and blue test)
• Splicing seam ≤0.5mm (use bank card to check)
• The noise of the cooling fan is <45 decibels (install a decibel instrument APP on your mobile phone)

Lessons from blood and tears: A certain car 4S store did not conduct a heat dissipation test, and the screen showed brightness attenuation after half a year of use. Return to the factory to repair delays the golden promotion period.​ ​Estimated losses exceed 600,000​​。

I have seen too many strange cases in my ten years of experience. The most exaggerated thing is that some customers buy display screens into light strips. Remember,​ ​Professional equipment must be equipped with professional services​ ​! Nowadays, the leading suppliers can achieve remote diagnosis of 7×24 hours, which is much more reliable than finding property electricians. When purchasing next time, remember to ask if you can sign it​ ​Brightness Warranty Agreement​ ​——The real ability is to dare to promise not to decline for three years!

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