Product Specification

Smart LED Display Controller for Multi Line Text QR Code and Real Time Information

Core Technical Parameters

Key Functional Advantages

1. Multi-Line Text & Real-Time Information Display

• 4-line independent control: Each line can display different content (navigation, promotions, notices) simultaneously, meeting diverse information transmission needs without mutual interference.
• Global language compatibility: Built-in font library covers over 100 languages, adapting to cross-regional and multi-ethnic scenarios without additional font configuration.
• Customizable time overlay: Supports personalized time formats, automatically syncing real-time time without manual updates, ensuring information timeliness.

2. Dual-Mode Interactive QR Code

• Flexible adaptation to distances: Full-screen QR code for long-distance scanning (e.g., parking payment, no need for car owners to get off), 3-line QR code with 4th-line text description for short-distance interaction (e.g., scenic spot guide, clear usage prompts).
• Stable recognition guarantee: Automatically truncates excess characters to ensure QR code normal recognition; one-click command to exit QR code mode and restore original display content.
• Wide application scope: Customizable QR code content (payment links, registration pages, guide maps), enabling fast "screen-person" connection.

3. Easy Integration & Low Operation Threshold

• Rich communication interfaces: Ethernet for LAN long-distance management, RS485 for industrial on-site connection, RS232 for legacy device docking, adapting to various system architectures.
• Standardized protocol control: All functions are implemented via standardized commands, no complex programming required—technical teams can master it quickly, reducing operation and maintenance costs.
• Plug-and-play adaptation: Seamlessly connects to existing management systems (parking lots, malls, workshops) without modifying hardware architecture.

4. Peripheral Linkage & Stable Performance

• Powerful relay control: 2 high-load relays can link barriers, lights, and equipment power supplies, realizing automatic scenario linkage (e.g., opening access control after QR code scanning).
• Extreme environment adaptation: Operates stably in -40°C ~ +85°C temperature range, with ESD and pulse protection for communication ports, suitable for harsh industrial or outdoor environments.
• Reliable data storage: Default display content, voice parameters, etc., are stored in flash memory and not lost after power failure.

5. Expandable Value-Added Functions

• High-capacity voice broadcast: Stores up to 256 voice files, supporting sequential or immediate play for welcome messages, safety alerts, and operation confirmations.
• On-site function upgrade: Supports on-site voice file updates and LED interface expansion (up to 4 HUB12 interfaces), adapting to dynamic scenario needs without replacing the main device.

Application Scenarios

• Commercial Complexes: 4-line display for floor navigation, brand promotions, and real-time time; 3-line QR codes link to coupons or membership registration; multi-language support caters to international customers.
• Smart Parking Lots: Full-screen parking payment QR codes, real-time parking availability display; relay control for barriers to open automatically after payment; voice broadcasts confirm "payment successful."
• Scenic Areas & Parks: Multi-language safety guidelines and 3-line QR codes for tour guides (4th line: "Scan code to get detailed routes"); real-time time overlay helps tourists arrange schedules.
• Industrial Workshops: 4-line display of production data, safety notices, and shift information; multi-language support adapts to diverse employee teams; IO interfaces detect equipment abnormalities and trigger voice alarms.
• Public Transportation Hubs: Multi-language schedules, directional guidance, and real-time time; QR codes link to ticket purchase pages or route inquiries; remote content updates via Ethernet/MQTT.
• Retail Stores: Display product promotions, discount information, and real-time time; QR codes direct to online stores or membership registration; voice broadcasts attract customer attention.

Why Choose NED200 Smart LED Display Controller?

• All-in-One Information Transmission: Integrates multi-line text, QR code interaction, real-time time, and voice broadcast, reducing system complexity and hardware costs.
• Highly Interactive Experience: Dual-mode QR code realizes fast "screen-person" connection, enhancing user participation and service efficiency.
• Global Adaptability: 100+ language support and multi-protocol compatibility meet cross-regional and multi-system integration needs.
• Industrial-Grade Reliability: Wide temperature resistance, multiple protection mechanisms, and stable performance ensure 24/7 operation in various environments.
• Cost-Effective Expansion: Supports on-site function upgrades and interface expansion, avoiding main device replacement and reducing long-term use costs.