The main differences lie in brightness, waterproof grade, dustproof performance and environmental adaptability.

• Indoor LED Display: Brightness 300–800 nits, no waterproof requirement, ultra-thin and lightweight, soft and eye-protective images, suitable for low-light indoor environments.
• Semi-outdoor LED Display: Brightness 800–1500 nits, with basic dustproof and splash-proof functions, designed for covered outdoor areas such as corridor eaves and mall doorways, avoiding direct sunlight and rain.
• Outdoor LED Display: Brightness 5000–10000 nits, IP65 high waterproof and dustproof grade, resistant to strong sunlight, rain, wind and temperature changes, stable for long-term outdoor operation.

Brightness selection depends on ambient light intensity to ensure clear visibility without glare:

• Dim indoor environments (museums, theaters): 300–500 nits
• Standard indoor scenarios (offices, retail shops): 500–700 nits
• Bright indoor areas (near windows, atriums): 1000–1500 nits
• Outdoor full sunlight exposure: ≥5000 nits

Refresh rate refers to the number of screen refreshes per second, measured in Hz. High refresh rate (≥3840Hz) eliminates screen flicker, ensures smooth video playback, and delivers perfect shooting effect without black stripes under mobile phone and camera recording. It is essential for live broadcast, stage performance and high-definition video display scenarios. Standard refresh rate (1920Hz) meets conventional advertising and text display needs with cost-effective performance.

Gray scale represents the brightness gradient of each RGB pixel, determining the color layering and transition effect of the screen. High gray scale (16bit) enables natural color transition, delicate dark detail performance, no color banding or distortion, and restores real and vivid colors, especially suitable for playing high-definition videos, images and live content.

Our full-color LED displays adopt wide viewing angle design, with horizontal viewing angle ≥160° and vertical viewing angle ≥140°. The screen color and brightness remain consistent without color shift or dimming when viewed from all directions, ensuring excellent visual experience for audiences in different positions of large venues.

Common causes and solutions:

Power failure: Check the distribution box circuit breaker and power switch, confirm normal power supply, replace damaged power adapters if needed

Signal abnormality: Restart the sending card and receiving card, check and re-plug HDMI and network signal cables to avoid loose connection

Control system crash: Reboot the control software and host computer to restore normal signal transmission

This problem is usually caused by local power supply failure, loose cable connection or damaged module. First check the power supply and signal cables of the faulty module, re-fix the connectors. If the problem persists, replace the faulty module or receiving card for quick recovery.