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Engineering a 7000+ Nits, Low-Power Industrial LED Display with Modbus Integration
—LED Display with Modbus Integration
Date: February 11, 2026
Comsight was tasked with designing a custom industrial LED display for extreme outdoor and high-temperature environments. Unlike standard commercial LED signage, this display had to deliver over 7000 nits of brightness in direct sunlight, operate at low power using single-color LED activation, meet IP66 dustproof and waterproof standards, and integrate seamlessly via Modbus protocol into the client’s existing industrial control system.
As a specialist in engineering-driven LED solutions, Comsight handled optical design, PCB architecture, power management, firmware development, protocol integration, and environmental protection, turning a technically demanding requirement into a fully customized industrial-grade LED solution.
Challenges for Industrial LED Display
Ultra-high brightness in outdoor conditions
Requirement: Maintain >7000 nits brightness while ensuring long-term stability under direct sunlight.
High-temperature, IP66-rated cabinet
Requirement: Reliable operation in high ambient temperatures, with full dust and water protection.
High impact resistance
Requirement: Survive mechanical stress common in industrial and roadside applications.
Pixel-level low power with true 1R1G1Y configuration
Requirement: Each pixel uses three LEDs (Red, Green, Yellow) with only one active at a time. Yellow must be a dedicated LED, not generated via red+green mixing.
Screen lock functionality
Requirement: Prevent unauthorized or accidental changes to displayed content.
Modbus-based system integration
Requirement: Ensure full compatibility with the client’s industrial control platform.
Internal temperature monitoring
Requirement: Detect and report cabinet temperature for operational safety and preventive maintenance.
Comsight’s Solution
High-brightness LED with optical lens design
Selected high-efficiency LEDs with dedicated optical lenses, achieving >7000 nits brightness with controlled power consumption and uniform luminance.
Dual-layer waterproof and heat-resistant cabinet
Developed an IP66-rated dual-layer cabinet, enhancing dust and water protection while supporting effective thermal management in high-temperature environments.
Custom PCB supporting true 1R1G1Y LED architecture
Designed PCB to accommodate three discrete LEDs per pixel.
Installed the yellow LED in the blue-channel position and modified the MCS protocol to correctly map “Y” commands without changing the client-side control logic.
Firmware with screen lock support
Customized firmware enables a screen lock function, ensuring operational security and preventing unauthorized content changes.
High-efficiency 24VDC power architecture
Automotive-grade 24V-to-4.2V DC-DC module with >93% efficiency, reducing heat generation and ensuring stable operation in high temperatures.
Integrated surge protection
Combined Ethernet and power-line surge protection to safeguard against lightning strikes and voltage surges in outdoor installations.
Full Modbus protocol support with temperature sensing
Real-time internal temperature monitoring and seamless integration with industrial control systems via Modbus.
Results
- Brightness: Stable >7000 nits under direct sunlight.
- Power Efficiency: Significantly reduced consumption via true single-color LED operation (1R1G1Y).
- Durability: IP66-rated cabinet and high-efficiency 24VDC power ensure reliable, long-term outdoor performance.
- Industrial Integration: Modbus support, internal temperature monitoring, and screen lock functionality allowed seamless integration without client-side software changes.
The WZG8x48-1R1G1Y-20.0-OSR industrial LED display demonstrated Comsight’s capability to deliver fully customized, industrial-grade LED solutions, helping clients reduce integration risk, enhance system reliability, and meet demanding performance requirements.
Your Idea, Our Solution
Looking for a high-brightness, low-power industrial LED display with full Modbus integration? Contact Comsight to develop a solution tailored to your operational needs.
