3.3V-5V TTL to RS485 Power Supply Converter Board Hardware Auto Controllers

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Model : TTL To Rs485 Module (Wide Voltage)
Sale price₹ 125.00 Regular price₹ 135.00
( ₹ 105.93 without 18% GST.)

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TTL To RS485 Module 485 To Serial Port UART Level Conversion Communication Automatic Flow Control Automatic Bidirectional Module/USB/ Download Cable

A 3.3V-5V TTL to RS485 power supply converter board is a hardware device that allows you to connect a device that uses TTL logic (like an Arduino) to an RS485 network. RS485 is a type of serial communication that is often used in industrial applications because it can transmit data over long distances and is resistant to electrical noise.

TTL To Rs485 Module Hardware Automatic Flow To Control Board

  • Lightning protection and anti-interference design: This is crucial for ensuring the bus can operate in harsh environments and withstand surges caused by lightning strikes.

  • High EMC and EMI performance: This indicates the module is designed to minimize electromagnetic interference emitted by the device and also reduce susceptibility to EMI from external sources.

  • Grounding for long-distance transmission: Grounding the module during long-distance deployments helps dissipate lightning energy and electrical noise, improving signal integrity.

  • Standard pin headers for easy integration: The standard 2.54 pitch pin headers simplify connection of the module to your development board or custom circuitry.

  • 120-ohm termination resistor: The 120-ohm matching resistor helps minimize signal reflections on long transmission lines, ensuring reliable data communication.

  • Multi-drop capability: Supporting at least 40 nodes on the network allows you to connect a significant number of devices on the bus.

  • Hot-swapping: This feature enables you to add or remove devices from the bus without interrupting communication, increasing system flexibility.

  • Anti-interference wiring and copper laying method: This careful design approach helps prevent signal crosstalk and other EMI issues that can degrade data quality.

Rs485 To Serial Port Uart Level Mutual Conversion Automatic Flow Control Module

  • Anti-Jamming and Anti-Interference Design: The module includes a terminal connected to the earth for improved security and reduced interference during long-distance outdoor transmission. Grounding is not needed for indoor, short-distance use.

  • Standard 2.54mm Pitch Design: This design facilitates easy secondary development and integration into various systems.

  • Termination Resistor: The module includes a 120-ohm termination resistor, which can be enabled by shorting R0, crucial for preventing signal reflection in long-distance communication.

  • Multi-Device Support: Supports communication among multiple devices, allowing up to 128 devices on a single RS-485 bus.

  • Hot Swappable: The module can be connected or disconnected without causing signal errors or system crashes.

  • Interference Prevention: Features a large area of copper on the PCB to prevent interference, ensuring reliable signal transmission.

  • Voltage Compatibility: Compatible with both 3.3V and 5.0V power supplies and signals, making it versatile for different systems.

  • Durability and Performance: Uses high-quality imported chips, designed for industrial use, with an operating temperature range of -40°C to +85°C and a transmission distance up to 1 kilometer (recommended for 800 meters without repeaters).

Rs485 Module TTL To Rs-485 Module

  • Signal Conversion: The MAX485 module converts TTL signals to RS485, enabling long-range, high data rate, and error-prone differential communication.

  • EIA-485 Standard: The module supports digital communications networks implementing the EIA-485 standard, effective over long distances and in electrically noisy environments.

  • Multi-Drop Configuration: Supports connecting multiple receivers in a linear, multi-drop configuration, making it suitable for industrial environments.

  • Microcontroller Compatibility: Allows data transmission and reception using the RS485 network from Arduino or other microcontrollers.

  • Industry Standard Protocol: RS485 is an industry-standard protocol that facilitates data transfer between microcontrollers and devices, offering robust communication features.

  • Multiple Device Communication: Supports data transfer between up to 32 devices on the same data line over a cable length of up to 1.2 km (4000 ft), with a maximum data rate of 10 Mbit/s.

  • Cost-Effective Design: Designed for both office and industrial applications, the module offers superior characteristics typically found in more expensive units despite being non-isolated.

Microcontroller TTL To Rs485 Module-level Conversion Red Board

  • ESD Protection: Provides electrostatic discharge protection with positive and negative 15KV, enhancing durability and reliability in various environments.

  • EMI Reduction: The chip includes a limited swing rate driver to reduce electromagnetic interference (EMI) and signal reflection, supporting a defect-free signal transmission speed of up to 500 kbps.

  • Multi-Machine Communication: Supports multi-machine communication with a receiver input impedance of 1/4 unit load, allowing up to 128 devices on the bus.

  • Wide Operating Temperature Range: Designed to operate in industrial environments, the chip functions effectively within a temperature range of -40℃ to +85℃.

  • Hot-Swap Capability: The module supports hot-swapping without causing signal issues, which is an advantage over other RS485 chips.

  • Overvoltage Protection: Features excellent overvoltage protection with dual transient suppression diodes.

  • Signal Integrity Improvement: Equipped with a 10Ω electronic resistor and patch design to protect the electronic components and improve RS485 signal integrity.

  • Integrated Signal Connections: RS485 and TTL signals are connected on one side to ensure signal quality and integrity.

  • Secondary Development: Wire-wrap board solder holes with a 2.54mm pitch facilitate secondary development.

  • Termination Resistor: Includes a 120Ω termination resistor, with the option to enable it by shorting R16.

  • Signal Indicators: Equipped with power, RXD, and TXD signal indicator lights to monitor transmitting and receiving status.

  • Signal Compatibility: Supports 3.3V and 5V signaling control, ensuring strong compatibility with various systems.

Microcontroller TTL To RS 485 Module-automatic Two-way

  • Power Supply Voltage (5V): The module operates efficiently with a 5V power supply, ensuring stable and reliable performance in various applications.

  • Serial Communication Level (5V and 3.3V TTL levels): It supports both 5V and 3.3V TTL levels for serial communication, offering compatibility with a wide range of microcontrollers and devices.

  • Output Port (RS485): Equipped with an RS485 port, the module enables seamless communication with RS485-compatible devices such as sensors, actuators, and other industrial equipment.

  • Communication Distance (Up to 1000 meters): Capable of transmitting data over long distances of up to 1000 meters when using twisted pair cables, making it suitable for applications requiring extended communication ranges.

  • Parallel Devices (Supports up to 128 devices): The module supports the parallel connection of up to 128 devices, allowing for efficient communication in complex network configurations or industrial setups with multiple devices.

Industrial Grade TTL To Rs485 Serial Port Module With Isolation

  • High-End Isolation Chip: Utilizes a high-end isolation chip for perfect isolation of power and signal between TTL and RS485 sides, ensuring exceptional anti-interference capabilities.

  • Wide Voltage Input and Compatibility: Supports a wide voltage input range of 3V to 5.5V, ensuring compatibility with both 3.3V and 5V systems, making it versatile for various applications.

  • Complete Power and Signal Isolation: Features complete isolation of power and signal, delivering high electromagnetic compatibility (EMC) and electromagnetic interference (EMI) performance, with an isolation voltage of up to 2500VDC.

  • Industrial Design and Lightning Protection: Designed for industrial applications with strong anti-interference capabilities and powerful lightning protection for RS485, suitable for harsh environments. Operates reliably in temperatures ranging from -40°C to 85°C. Supports transmission distances of up to kilometers, with recommended usage within 800 meters and the option to add repeaters for longer distances.

  • Half-Hole Process Design: Features a half-hole process design with a thickness of 0.8mm, allowing for easy integration as a master device or terminal welding use.

  • Signal Indicator Lights: Equipped with RXD and TXD signal indicators, providing a comprehensive view of the sending and receiving status for easy monitoring and troubleshooting.

 USB To TTL/RS 485 Dual Function & Protection

  • USB2.0 Compatibility: The USB to RS485 TTL Serial Converter Adapter FT232 complies with USB2.0 standard and is backward compatible. It adheres to the standard RS485 protocol.

  • Direction Control and Data Flow: Features automatic data flow control with direction control, automatically distinguishing and controlling data transfer direction. Supports a wide baud rate range of 300 to 9216000bps and automatically detects the serial signal data rate.

  • Dual-Functionality: The adapter module serves as a dual-function device supporting multipoint connections. Each converter allows connection to 32 RS485 interface devices. It includes TVS tube interface protection and USB self-recovery protection.

  • Jumper Configuration: Four jumpers connect the USB interface to the RS485 interface. Removing the jumpers allows the USB interface to function as a TTL Level Serial port.

  • Serial Communication Conversion: Facilitates two-way serial communication signal conversion between RS485 and a personal computer USB port using a virtual serial COM port. It is self-powered via USB and utilizes FT232RL+75176 components.

  • Compatibility and Operating System Support: Compatible with various operating systems including Windows98/ME/2000/XP/WIN7/Vista, Linux, and Mac.

  • Technical Details: Features a load capacity supporting multipoint connections, with each converter allowing up to 32 RS485 interface devices. Provides interface protection with TVS tube protection and USB self-recovery protection. The device operates within a wide temperature range from -40 to 90°C and is colored black. It includes three screw terminals and supports baud rates ranging from 300 to 9216000bps.

USB To RS 485 (CH340 Chip) Communication Module Two-way TVS Protection

  • Support plug and play and hot plug (USB side): Enables seamless connectivity without manual configuration and Allows connecting or disconnecting the device while the system is powered on.


  • Support baud rate range: 75-115200bps: Offers versatile communication speeds for various application requirements

  • Fully compliant with USB 2.0 standard, compatible with USB1.1: Meets industry standards for USB connectivity and Ensures compatibility with modern USB interfaces (USB 2.0) and backward compatibility with USB 1.1.

  • Communication distance can reach 1.2KM, with industrial site anti-interference ability: Provides long-range communication capabilities up to 1.2 kilometers and Features robust anti-interference ability for reliable communication in industrial environments

  • TVS transient suppression protection: Incorporates TVS transient suppression protection for enhanced safeguarding against voltage spikes and transient surges

  • Extended temperature range from -40°C to +85°C: Designed to operate reliably across extreme temperature conditions, ensuring consistent performance in harsh environments

USB To RS232 Rs485 (CH340 Chip) Communication Module Two-way TVS Protection

  • TVS Transient Suppression: Protects against sudden voltage spikes to prevent damage to connected devices.

  • Electrostatic Discharge (ESD) Protection: Guards against electrostatic shocks that could harm sensitive components.

  • Overvoltage Protection: Prevents damage caused by excessive voltage, ensuring the safety of the system.

  • Signal Line Short Circuit Protection: Shields against short circuits in signal lines without causing damage to the circuit.

  • Power Supply Short Circuit Protection: Safeguards the power supply during short circuit events, preventing potential damage.

  • Transmission Distance: Extends data transmission up to 1200 meters, tested at a baud rate of 9600 bps, providing flexibility in communication range.

  • Baud Rate Support: Supports baud rates up to 921600 bps, significantly faster than the standard 115200 bps, enabling faster bi-directional communication.

  • Multi-System Compatibility: Enables hot swapping on various operating systems including Windows (98/CE/2000/2003/2008/XP/7/8/10/Vista), Linux, and Mac OS X, offering versatility in system compatibility. 

  • Automatic Data Direction Detection: Intelligently identifies and adjusts the direction of data transmission, eliminating the need for handshake signals like RTS and DTR.

USB To Serial Port Rs 485 Module Ch340 Chip Download Cable

  • Machine Tool PLC Data Read/Write: Enables real-time data exchange between PLCs and machine tools for monitoring and control purposes, enhancing efficiency and productivity in industrial settings.

  • Monitoring Data Read/Write and Pan/Tilt Control: Provides remote access to monitoring data and enables pan/tilt control of surveillance cameras, offering enhanced surveillance capabilities and remote monitoring options.

  • Home Appliance Control: Facilitates remote control of home appliances such as lights, thermostats, and security systems, enhancing convenience and energy efficiency for homeowners.

  • Access Control System Integration: Integrates with access control systems to manage card-based entry and access permissions, enhancing security and access control in commercial and industrial environments.

  • Diverse Industrial Automation Applications: Enhances various industrial automation applications including instrumentation, parking systems, vending machines, and toll booths, improving operational efficiency and automation capabilities.

  • Key Features:

    • LED Display: Provides clear visual indication of data communication status, ensuring easy monitoring and troubleshooting.
    • CH340 Chip: Utilizes the CH340 chip for reliable and stable data transfer, ensuring consistent performance.
    • Wide System Support: Compatible with Windows XP, Vista, 7, 8, and 10 operating systems, offering versatility and ease of integration.
    • Output Ports: Offers EEN (D+) and B (D-) output ports for device connection, ensuring compatibility with a wide range of devices.
  • Additional Benefits:

    • Easy Installation and Setup: Simple installation and configuration process, reducing setup time and complexity.
    • Robust Performance: Delivers dependable data transmission even in demanding industrial environments, ensuring reliable operation.
    • Cost-Effective Solution: Offers a cost-effective solution for enhancing industrial data communication capabilities, providing value for businesses seeking to improve efficiency and automation.  

USB To 485 Converter

  • Supports Baud Rate Range: Baud rates from 75bps to 115200bps, with speeds of up to 6Mbps, ensuring flexible and high-speed data transmission.

  • Compatible Operating Systems: Supports Windows XP, Vista, Windows 7, Linux, MacOS, and WinCE5.0, providing compatibility across a wide range of platforms.

  • Communication Distance: Capable of communication over distances of up to 1200 meters (max), enabling long-range data transfer.

  • No External Power Required: Powered solely by the USB port, eliminating the need for an external power source and simplifying installation and operation.

  • USB Standard Compliance: Fully compliant with USB 2.0 standard, ensuring high-speed and reliable data transfer, while also backward compatible with USB 1.1 for compatibility with older devices and systems.

Max485 Module 5v One-way Serial Port TTL To RS 485

  • MAX485 Chip: Utilizes the MAX485 chip, which is a low-power communications, slew rate-limited transceiver specifically designed for RS-485 communication.

  • Terminal Block Pin: Equipped with an onboard pick 2.54mm pitch terminal block pin for easy and secure connections.

  • Serial Port Pins and Direction Control: Includes serial port pins and direction control pins for enhanced flexibility and control over communication.

  • Working Voltage: Operates within a working voltage range of 3.0-3.6V, making it suitable for low-power applications.

  • MAX485: This is the core RS-485 transceiver chip. It takes TTL (Transistor-Transistor Logic) level serial signals commonly used by microcontrollers and converts them to differential signals suitable for transmission on RS-485 networks. It can also receive differential RS-485 signals and convert them back to TTL level for the microcontroller. It offers features like low-power operation and swing rate limiting to reduce electromagnetic interference (EMI).

Max3485 Module 3.3v One-way Serial Port TTL To Rs 485

  • MAX3485 Chip: Utilizes the MAX3485 chip, which is a low-power communications, slew rate-limited transceiver specifically designed for RS-485 communication.

  • Terminal Block Pin: Equipped with an onboard pick 2.54mm pitch terminal block pin for easy and secure connections.

  • Serial Port Pins and Direction Control: Includes serial port pins and direction control pin for enhanced flexibility and control over communication.

  • Working Voltage: Operates within a working voltage range of 3.0-3.6V, making it suitable for low-power applications.

  • MAX3485: This IC combines functionalities of a USB interface with an RS-485 transceiver. It essentially acts as a bridge between a USB port on a computer and RS-485 devices. It allows you to connect RS-485 devices to your computer for communication and programming purposes. MAX3485 handles the USB communication protocol and converts it to RS-485 signals for the connected device.

Max13487 Module 3.3v One-way Serial Port TTL To Rs 485

  • MAX13487 Chip: Utilizes the MAX13487 chip, which is a low-power communications, slew rate-limited transceiver specifically designed for RS-485 communication.

  • Terminal Block Pin: Equipped with an onboard pick 2.54mm pitch terminal block pin for easy and secure connections.

  • Serial Port Pins and Direction Control: Includes serial port pins and direction control pins for enhanced flexibility and control over communication.

  • Working Voltage: Operates within a working voltage range of 3.0-3.6V, making it suitable for low-power applications.

  • MAX13487: This IC builds upon the MAX485 by adding automatic direction control. While MAX485 requires separate control pins to set the transmit/receive direction, MAX13487 automatically detects the data flow and adjusts the direction internally. This simplifies usage as you don't need to manage direction control signals. It's often pin-compatible with MAX485, allowing for easy replacement in some applications.
Feature MAX485 MAX3485 MAX13487
Function RS-485 Transceiver USB to RS-485 Bridge RS-485 Transceiver
Communication Interface Serial TTL USB Serial TTL
Automatic Direction Ctrl No No Yes


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