TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl Default Title

TTL to RS485 Converter Module – Auto Flow Control for Arduino

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$8.74 $10.20
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TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl Default Title
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl Default Title
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl Default Title
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl
  • TTL to RS485 Converter Module – Auto Flow Control for Arduino Serial Converter Module Axl
TTL to RS485 Converter Module – Auto Flow Control for Arduino

TTL to RS485 Converter Module – Auto Flow Control for Arduino

$8.74 $10.20
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LOTHYE TTL to RS485 Converter Module – Hardware Auto Flow Control

Upgrade your serial communication projects with the LOTHYE TTL to RS485 Converter Module. Designed for Arduino, microcontrollers, and industrial UART applications, this compact board seamlessly converts TTL signals to RS485 with fully automatic hardware flow control — no extra code or manual direction-switching needed. Made in Mainland China.

Why Choose This TTL to RS485 Module?

  • Wide Voltage Input (3.0V – 30V): Compatible with both 3.3V and 5.0V systems, making it ideal for a broad range of microcontroller platforms including Arduino, STM32, ESP32, and Raspberry Pi.
  • Hardware Automatic Flow Control: Send and receive direction switches automatically — operate it as simply as a standard UART serial port.
  • High EMC & EMI Performance: Industrial-grade imported chips deliver exceptional anti-interference performance for noisy electrical environments.
  • Lightning Protection Design: Built-in RS485 lightning protection for safe long-distance and outdoor field installations.
  • Long Transmission Distance: Tested up to 850 meters using 2×1.5mm² cable; recommended use within 800 meters (add a repeater beyond 800m).
  • Wide Baud Rate Support: 110 to 256,000 bps — suitable for slow sensor networks and high-speed data links alike.
  • Multi-Node Network: Supports up to 40 nodes on the same RS485 bus for scalable multi-device communication.
  • Hot-Swappable: Connect and disconnect devices without signal lock-up or bus-dead phenomena.
  • RXD / TXD LED Indicators: Visual send/receive status indicators for easy debugging at a glance.
  • 120Ω Matching Resistor: Jumper-selectable termination resistor; short R0 to enable — recommended for long-distance runs.
  • Standard 2.54mm Pin Pitch: Easy integration into breadboards and custom PCBs for secondary development.
  • Wide Operating Temperature: –40°C to +85°C for reliable performance in demanding industrial and field environments.

Technical Specifications

  • Communication Standard: TTL UART ↔ RS485 half-duplex
  • Supply Voltage: 3.0V – 30V (limit: 33V; minimum: 2.8V)
  • Compatible Logic Levels: 3.3V and 5.0V
  • Baud Rate: 110 – 256,000 bps
  • Max Nodes on Bus: 40
  • Max Transmission Distance: ~800 m (recommended)
  • Operating Temperature: –40°C to +85°C
  • Termination Resistor: 120Ω (jumper-selectable)
  • Pin Pitch: 2.54 mm standard
  • Includes: Terminal block + silicone wire
  • Origin: Made in Mainland China

What's in the Box?

  • 1× TTL to RS485 Converter Module
  • 1× Terminal Block
  • Silicone Connection Wire

Perfect For

  • Arduino & microcontroller serial communication projects
  • Industrial automation and PLC communication
  • Long-distance sensor networks
  • RS485 Modbus systems
  • Smart home and IoT data bus applications

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Frequently Asked Questions

Q: Is this TTL to RS485 module compatible with Arduino and ESP32?

A: Yes! The module supports both 3.3V and 5.0V logic levels, making it fully compatible with Arduino (5V), ESP32 (3.3V), STM32, Raspberry Pi, and other popular microcontroller platforms without any additional level-shifting hardware.

Q: Does this RS485 converter module require manual direction control in code?

A: No. This module features hardware automatic flow control, meaning the transmit/receive direction switches automatically based on data activity. You can use it just like a standard serial (UART) port without writing any extra direction-control logic in your firmware.

Q: How far can this module transmit RS485 signals?

A: The module has been tested up to 850 meters using 2×1.5mm² cable. For reliable operation, use within 800 meters. For distances beyond 800 meters, it is recommended to add an RS485 repeater. Enable the built-in 120Ω termination resistor (short R0) for long-distance runs to reduce signal reflections.

Q: Can I connect multiple devices to the same RS485 bus with this module?

A: Yes. The module supports multi-node communication, allowing at least 40 nodes to be connected on the same RS485 network — ideal for Modbus RTU networks and distributed sensor systems.

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