Description:
RS485 to TTL Converter Module Serial Port UART Hardware Automatic Flow Control Module is based on MAX485 chip, which is one of the most relied on when working with the RS485 Bus. This module supports 3.3V and 5V power supplies, and TTL Levels. It can connect and identify up to 128 nodes on the RS485 bus. This module also supports a very long range of the bus.
This RS485 to TTL Converter Module can support up to 800 metre of bus length. It has connections for RX, TX, +ve, and GND on one side, and on the other side, it has connection for RS485 bus. It also has the Indicators for the Receive and Transmit Signals. The thickness of the PCB is 0.8 mm, which enables it to be used as an add-on on any of your PCBs or devices.
Features:
- The module is fully considered mine design, long-distance transmission signal 485 in the wild. The module “Connected to the ground” terminal is connected to the earth, which can play a very good anti-jamming and anti-effect, making it more secure; it can be left unconnected when used indoors for short-distance transmission.
- Using the standard 2.54 pitch design, easy secondary development.
- Has a 120 ohm termination resistor, shorted R0 to enable the termination resistor.
- Support multi-machine communication, allowing access at up to 128 devices on the bus.
- The module can be hot swapped, the signal does not appear dead phenomenon.
- A large area of copper to prevent interference.
- Compatible with 3.3V and 5.0V power supply.
- Compatible with 3.3V and 5.0V signal.
- Absolute using imported chips, industrial design, anti-interference ability, while using more effective mine design can be used in the industrial field and harsh environments. The working temperature is -40° to +85° with a transmission distance up to 1 kilometer (tested with 850 meters of cable F1.5, recommended up to 800 meters, beyond which repeaters should be added).
- Semi-hole pads, onboard module, thin PCB, with a thickness of 0.8mm.
- Has RXD, TXD signal indicator lights to monitor send and receive status.
Note:
- Only one in the whole network, 3.3V and 5.0V power supply, RS485 signal perfectly compatible with automatic flow control module.
- Without “Receiving – launch” control, this module is as simple to use with your serial port operations.
Specifications:
| Core Chip | MAX485 |
|---|---|
| Power Supply | 3.3V / 5.0V |
| Bus Capacity | Supports up to 128 nodes |
| Transmission Distance | Up to 800 m (1 km max with repeaters) |
| PCB Thickness | 0.8 mm |
| Indicators | RXD, TXD LEDs |
| Termination | 120 Ω resistor (optional) |
| Operating Temperature | -40°C to +85°C |
Package Includes:
- 1 x RS485 To TTL Module Hardware Automatic Flow Control Module
RS485 to TTL Converter Module Serial Port UART Hardware Overview
This RS485 to TTL Converter Module Serial Port UART Hardware is built around the MAX485 transceiver chip, converting differential RS485 bus signals into standard TTL-level UART for microcontrollers and serial devices. It’s designed for reliable, long-distance communication up to 800 m and supports multi-drop networks of up to 128 nodes.
Key Features of RS485 to TTL Converter Module Serial Port UART Hardware
- Built-in 120 Ω termination resistor (R0 jumper enabled) for bus stability
- Supports up to 128 devices on the RS485 bus for multi-point communication
- Wide supply and signal compatibility: 3.3 V and 5 V operation
- Hot-swap capable—no “dead” signal periods when connecting or disconnecting
- Onboard RX/TX LEDs for real-time data activity indication
- Large copper pours minimize EMI on long bus runs
- Fast shipping from Zbotic—get it delivered within 24 hours*
Applications and Use Cases
- Industrial automation networks linking PLCs and motor drives
- SCADA data acquisition for remote sensors and controllers
- Multi-point building automation (HVAC, lighting control)
- Serial device expansion in laboratory instrumentation
- Long-range telemetry for environmental monitoring
- Embedded system prototyping with RS485 bus interfaces
How to Use RS485 to TTL Converter Module Serial Port UART Hardware
Connect the module’s VCC and GND pins to your 3.3 V or 5 V power rail, then wire TX and RX to your microcontroller’s UART ports. On the RS485 side, attach the A and B differential lines to the bus. Enable the 120 Ω termination resistor by shorting the R0 jumper when the module is at either end of the bus. Power up and observe the RX/TX LEDs to confirm data flow—no additional driver code is required thanks to built-in automatic flow control.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
Can I run this module at 3.3 V logic?
Yes. The converter supports both 3.3 V and 5 V power supplies and signal levels, making it compatible with most microcontrollers and UART devices.
How do I enable the termination resistor?
Simply short the R0 jumper pads on the PCB to activate the onboard 120 Ω termination resistor. Remove the jumper if the module is used in the middle of a longer bus segment.
What is the maximum cable length and node count?
This RS485 to TTL module can drive bus lengths up to 800 metres and supports up to 128 devices on the same RS485 network.
Technical Specifications
| Model | RS485 |
|---|---|
| Interface / Protocol | UART, RS485, TTL |
| SKU | AI0572 |
| Weight | 0.00455 kg |
| Availability | Out of Stock |
Applications & Use Cases
The RS485 to TTL Converter Module Serial Port UART Hardware Automatic Flow Control Module is a versatile usb interface module used across a wide range of applications including serial communication, industrial automation, data logging, PLC interfacing, and IoT gateway.
Common use cases:
- Converting USB to RS485 for industrial equipment
- Building a data logger for factory sensors
- Debugging embedded systems via UART
This product is ideal for embedded system developers and industrial automation engineers.
Technical Tip: Industrial-grade modules with isolation protect against ground loops and voltage spikes in noisy environments.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Rohan Parekh (verified owner) –
Good quality RS485 to TTL Converter Module Serial. Ripple is low. Suitable for most electronics projects.
Sunil Trivedi (verified owner) –
Very satisfied with this RS485 to TTL Converter Module Serial. Using it in my solar project, charges perfectly.
Yogesh Vohra (verified owner) –
Good quality RS485 to TTL Converter Module Serial. Ripple is low. Suitable for most electronics projects.
Lokesh Parekh (verified owner) –
This RS485 to TTL Converter Module Serial is reliable and efficient. Running my IoT setup 24/7 with no issues.
Sandhya Tiwari (verified owner) –
Great quality RS485 to TTL Converter Module Serial. Powering my entire project board with this. Very reliable.
Aditi Banerjee –
Excellent RS485 to TTL Converter Module Serial! Output is stable and reliable. Perfect for my electronics project.
Sumit Kohli (verified owner) –
Perfect RS485 to TTL Converter Module Serial for my portable project. Battery life is better than expected.
Deepika Yadav (verified owner) –
This RS485 to TTL Converter Module Serial performs flawlessly. Voltage regulation is precise and consistent.
Neha Bhandari (verified owner) –
Nice RS485 to TTL Converter Module Serial. Works as expected for my power needs. Good efficiency.
Anand Naidu –
Nice RS485 to TTL Converter Module Serial. Works as expected for my power needs. Good efficiency.
Pallavi Solanki –
Great quality RS485 to TTL Converter Module Serial. Powering my entire project board with this. Very reliable.
Anil Thakur (verified owner) –
This RS485 to TTL Converter Module Serial is reliable and efficient. Running my IoT setup 24/7 with no issues.
Piyush Thakur –
Good RS485 to TTL Converter Module Serial. Output is stable. Gets slightly warm under full load but nothing concerning.
Ananya Tiwari (verified owner) –
Superb RS485 to TTL Converter Module Serial! Efficiency is high and it runs cool even under load.
Varun Krishnan –
Good quality RS485 to TTL Converter Module Serial. Ripple is low. Suitable for most electronics projects.
Rakesh Nair (verified owner) –
Good RS485 to TTL Converter Module Serial. Output is stable. Gets slightly warm under full load but nothing concerning.
Om Kulkarni (verified owner) –
Okay RS485 to TTL Converter Module Serial. Output is slightly off from specified but within usable range.
Lakshya Negi (verified owner) –
Perfect RS485 to TTL Converter Module Serial for my portable project. Battery life is better than expected.
Vaishali Desai –
Outstanding! This RS485 to TTL Converter Module Serial supplies clean power to my sensitive circuits. No noise at all.
VASANTDADA SUGAR INSTITUTE (verified owner) –
Ashwin Reddy (verified owner) –
Very satisfied with this RS485 to TTL Converter Module Serial. Using it in my solar project, charges perfectly.
Raj Dhawan (verified owner) –
Love this RS485 to TTL Converter Module Serial. Compact size and excellent performance. Worth the price.
Varun Rathore (verified owner) –
Great quality RS485 to TTL Converter Module Serial. Powering my entire project board with this. Very reliable.
Yashwant Chatterjee (verified owner) –
Great quality RS485 to TTL Converter Module Serial. Powering my entire project board with this. Very reliable.
Dinesh Arora (verified owner) –
Great RS485 to TTL Converter Module Serial. Voltage is rock solid under varying loads. Highly recommended.