MAX485 TTL to RS485 Converter Module | Long Distance Serial Communication for Arduino & PLC

The MAX485 TTL to RS485 Converter Module is a compact and reliable transceiver board designed to convert TTL-level UART signals into RS485 differential signals, enabling long-distance, noise-resistant serial communication.

Built around the MAX485 IC, this module supports communication distances of up to 1.2 km (4000 ft) and allows up to 32 devices to communicate on the same RS485 bus. Thanks to differential signaling and slew-rate-limited transmission, it delivers stable and error-free data transfer even in electrically noisy environments.

The module is fully compatible with Arduino, ESP32, STM32, PIC, and other 5V TTL microcontrollers, making it ideal for industrial automation, Modbus networks, sensor systems, PLC interfaces, and IoT projects. All control pins are exposed, giving full flexibility to manage transmission direction via your microcontroller.

With its 5.08 mm terminal block, low power consumption, and industrial-grade design, the MAX485 module is a cost-effective solution for extending serial communication reliably.

⭐ Key Features

• Converts TTL (UART) signals to RS485

• On-board MAX485 low-power transceiver IC

• Long-distance communication up to 1.2 km

• Supports up to 32 devices on one RS485 bus

• High data rate support up to 10 Mbps

• Noise-immune differential signaling

• Slew-rate-limited transceiver for stable transmission

• All IC pins accessible for full control

• 5.08 mm pitch terminal block for easy wiring

• Compact, durable, and industrial-ready design

📌 Applications

• Long-distance serial communication

• Industrial automation systems

• Arduino & microcontroller projects

• Modbus RS485 networks

• PLC, CNC, and machine control

• Sensor networks and IoT systems

📊 Specifications