MAX485 Transceiver Module – TTL UART Serial to RS485 Interface

The MAX485 Transceiver Module is a compact and reliable interface board that converts TTL UART signals to RS485 differential signals. Based on the MAX485 IC, it enables long‑distance, noise‑resistant communication between microcontrollers and industrial devices.
Widely used in instrumentation, automation, and IoT projects, this module supports half‑duplex RS485 communication with low power consumption, making it ideal for Arduino, ESP32, STM32, and PLC integration.

Specifications

• Chipset: MAX485 (low‑power transceiver IC)
• Communication Type: RS485 (half‑duplex)
• Interface: TTL UART to RS485
• Operating Voltage: 5V DC
• Current Consumption: Low power design
• Pins: RO, RE, DE, DI, A, B, VCC, GND
• Distance: Supports long‑distance communication (up to 1200m with twisted pair cable)
• Data Rate: Up to 2.5 Mbps
• Applications: Instrument interfaces, industrial automation, IoT devices, Arduino/ESP32/STM32 projects

Features

• TTL to RS485 conversion for reliable communication
• MAX485 IC ensures low power and high efficiency
• Supports long‑distance data transmission (up to 1200m)
• Compact PCB design for easy integration
• Compatible with Arduino, ESP32, STM32, Raspberry Pi
• Ideal for industrial instruments, IoT, and automation systems
• Simple pinout for quick wiring and setup

* Image shown is a representation only.