TTL to RS485 Serial UART Level Conversion Module

Upgrade your electronics projects with this compact TTL to RS485 Conversion Module. Designed for seamless bidirectional signal conversion between TTL UART and RS485 levels, this module is an essential component for microcontroller projects, industrial automation, long-distance serial communication, and embedded systems development.

Key Features

Bidirectional Conversion: Converts TTL (3.3V/5V) UART signals to RS485 differential signals and vice versa for reliable, noise-resistant data transmission.
Automatic Flow Control: Built-in automatic direction control eliminates the need for manual switching between transmit and receive modes.
Wide Voltage Compatibility: Supports both 3.3V and 5V power supplies, making it compatible with Arduino, Raspberry Pi, STM32, ESP32, and other common development platforms.
SMD Components: Surface-mount design ensures a stable, compact, and durable build for professional and hobbyist applications alike.
Customizable Quantity: Available in packs of 1, 5, or 10 pieces to suit your project scale.
Ultra-Compact Form Factor: Measuring just 1.5 × 4.3 cm and weighing only 1.69 g — easy to integrate into tight spaces.

Specifications

Dimensions	1.5 × 4.3 cm
Weight	1.69 g
Supported Voltage	3.3V / 5V
Interface	TTL UART ↔ RS485
Flow Control	Automatic
Components	SMD
Available Quantities	1 pc, 5 pcs, 10 pcs

What's in the Box?

TTL to RS485 Conversion Module (quantity as selected)

Perfect For

Arduino, Raspberry Pi & ESP32 serial communication projects
Industrial sensor networks and PLC communication
Long-distance wired data transmission
Embedded system development and prototyping
DIY electronics and maker projects

Frequently Asked Questions

Q: What does the TTL to RS485 Module do?

A: The TTL to RS485 Module converts TTL-level UART serial signals (3.3V or 5V) to RS485 differential signals and back, enabling reliable long-distance serial communication between microcontrollers and RS485-compatible devices such as sensors, PLCs, and industrial equipment.

Q: Is this module compatible with Arduino and Raspberry Pi?

A: Yes! The module supports both 3.3V and 5V power supplies, making it fully compatible with popular platforms including Arduino, Raspberry Pi, STM32, ESP32, and most standard development boards without any additional level-shifting hardware.

Q: Does this TTL to RS485 Module require manual direction control?

A: No. This module features automatic flow control, which automatically switches between transmit and receive modes. This simplifies firmware development and makes integration into your project fast and straightforward.

Q: How many modules do I get per order?

A: You can choose from three quantity options at checkout: 1 piece, 5 pieces, or 10 pieces — perfect whether you need a single module for prototyping or a bulk pack for production.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.