The RS485 Serial Port LED Display Meter is a device that features a 4-digit 0.56-inch LED display and utilizes the RS485 communication protocol for data transmission. This meter is designed to provide accurate readings and can be used in various applications that require monitoring and displaying numerical data.The RS485 communication protocol allows for reliable data transmission over long distances, making it suitable for industrial automation, control systems, and other applications where stable and secure communication is essential. The 4-digit LED display ensures clear visibility of the measured values, making it easy to read and monitor in different environments.This particular meter is compact in size, making it easy to install in different settings. It is compatible with RTU/ASCII communication protocols, enabling seamless integration into existing systems that use these standards. The availability of more than 10 units indicates that there is an ample supply of this product for potential buyers.

The RS485 Serial Port LED Display Meter (4-Digit, 0.56 Inch) is a compact yet powerful digital display module designed for real-time monitoring and visual output in industrial and automation systems. With its bright 0.56-inch 7-segment LED display, this unit delivers clear, high-visibility numeric readouts in a wide range of environments—from control panels to factory floors.

This model features RS485 communication capability with Modbus RTU protocol support, making it ideal for integration into SCADA systems, PLCs, microcontrollers (e.g., Arduino, STM32), and industrial automation platforms. The RS485 interface allows long-distance, noise-resistant, multi-device communication, ensuring stable and interference-free data exchange even in electrically noisy environments.

Built for durability and performance, the display meter is housed in a compact and robust ABS or metal shell and features 4-digit numeric output, suitable for displaying values such as temperature, voltage, current, speed, or production counts.

With wide voltage input support, user-configurable baud rates, and a plug-and-play pin header interface, this digital display meter provides exceptional ease of use and flexibility for both developers and engineers.

🧰 Key Features:

📟 High-Contrast LED Display:

• 4-digit 0.56" red LED display for excellent visibility

• Supports numeric output from 0000 to 9999

• Wide viewing angle and anti-glare design

🖧 RS485 Serial Communication:

• Modbus RTU protocol compatible

• Multi-node networking up to 32 devices on a single bus

• Long-distance transmission (up to 1200m)

• Stable and anti-interference communication, ideal for industrial use

⚙️ Flexible Configuration:

• Adjustable baud rate (e.g., 9600, 19200 bps)

• Configurable slave address and data register mapping

• Supports simple ASCII or HEX command mode

⚡ Robust Power Support:

• Operates on DC 5V or DC 12V/24V (varies by model)

• Low power consumption, suitable for continuous operation

🔩 Compact & Durable Build:

• Industrial-grade enclosure (ABS or aluminum alloy)

• Easy mounting options (panel mount or screw fit)

• Lightweight and space-saving for tight enclosures

🎯 Applications:

• 🏭 Industrial Automation Systems – Display readings from PLCs, HMIs, and sensors

• 🔌 Power Monitoring Panels – Show voltage, current, or energy data

• 🔬 Lab Equipment & Prototyping – Interface with Arduino, Raspberry Pi, ESP32, STM32, etc.

• 🛠️ Manufacturing Lines – Visual count displays for production units

• ⚙️ Environmental Monitoring Systems – Display temperature, humidity, and sensor values

• 🧰 Control Cabinets & Machine Interfaces – Show device status, motor speeds, error codes