★ 4.9★ Rated by 750+ Customers on Google

🚀 Startup India Recognized Company

🚚 Pan India Delivery via Trusted Courier Partners

🏬 Only Physical + Online Robotics Store in Pimpri

🎓 Trusted by Engineering Students, Makers & Innovators Across India

★ 4.9★ Rated by 750+ Customers on Google

🚀 Startup India Recognized Company

🚚 Pan India Delivery via Trusted Courier Partners

🏬 Only Physical + Online Robotics Store in Pimpri

🎓 Trusted by Engineering Students, Makers & Innovators Across India

RS485 to TTL Converter Module – Automatic Flow Control and Transient Voltage Suppression

Parameter	Detailed Specification
Operating Voltage	3.3V to 5.0V DC
Logic Level	Compatible with 3.3V and 5.0V
Baud Rate Support	110bps – 128kbps
Transmission Distance	Up to 1200 Meters (at 9600 bps)
Flow Control	Hardware Automatic (No Enable pin required)
Protection	600W TVS Surge Protection & 15KV ESD
Operating Temp	-40°C to +85°C (Industrial Grade)

Price

🚚 Ships within 24 Hours
📦 Pan India Delivery

₹ 50.85

(Tax included)

Barcode: 93175

Product Description

Upgrade your industrial networking with the RS485 to TTL Converter Module. This high-performance adapter allows microcontrollers like Arduino, ESP32, or STM32 to communicate over the robust RS485 protocol, which is the gold standard for long-distance, noise-resistant serial data transfer. At Robogears, we recommend this specific module because it features Automatic Flow Control logic. Unlike cheaper MAX485 modules that require you to manually toggle an "Enable" pin in code to switch between sending and receiving, this module handles the direction switching automatically in hardware. Whether you are networking sensors across your Pimpri factory floor or interfacing with industrial PLCs, this module ensures reliable, "set-and-forget" communication.

Detailed Key Features

Automatic Direction Control: Simplifies your software significantly; you only need to use Serial.print() and Serial.read() as if it were a local UART connection.
Industrial-Grade Protection: Equipped with 600W TVS (Transient Voltage Suppression) diodes and 10Ω current-protection resistors to guard against lightning surges and static electricity.
Multi-Voltage Compatibility: Works perfectly with both 3.3V (Raspberry Pi/ESP32) and 5V (Arduino Uno/Mega) systems without needing external level shifters.
High Anti-Interference: Utilizes differential signaling to maintain data integrity even in environments with high electromagnetic noise from motors or relays.
Standard 2.54mm Pitch: Breadboard-friendly pins for the TTL side and a secure 2-pin screw terminal for the RS485 bus wires.

All Technical Details

Pin Definition (TTL Side):
- VCC/GND: Power Input.
- TXD: Data Output (Connect to MCU RX).
- RXD: Data Input (Connect to MCU TX).
Bus Side:
- A+: RS485 Non-inverting signal.
- B-: RS485 Inverting signal.
Status Indicators: Integrated RXD and TXD signal indicator LEDs for real-time visual debugging of data traffic.
Termination: Includes a 120-ohm termination resistor footprint, essential for preventing signal reflection on very long cable runs.

Prototyping & Engineering Tips (Robogears Exclusive)

The "Swap" Rule: At our Pimpri workshop, we always remind makers: connect A to A and B to B between two RS485 modules. If the data is garbled or not transmitting, the most common fix is simply swapping the A and B wires.
Grounding for Distance: While RS485 is a 2-wire differential system, for distances over 100 meters, it is best practice to connect the grounds of the two systems (if possible) or use a shielded twisted-pair cable to prevent common-mode voltage issues.
Termination Resistors: For a simple point-to-point link, the built-in resistors are usually sufficient. In a multi-drop network (many devices on one bus), ensure only the two devices at the extreme physical ends of the cable have the 120-ohm termination enabled.
Twisted Pair is Essential: To fully utilize the noise rejection of RS485, you must use a twisted pair of wires (like one pair from a CAT5/6 cable). Using flat parallel wires will significantly reduce your maximum reliable distance.

Package Includes

1 x RS485 to TTL Converter Module with Automatic Flow Control

Image Disclaimer

Product images are shown for illustrative purposes only. The color of the PCB (typically Blue or Black) or the specific brand of the transient protection diodes may vary between batches, but the hardware automatic flow control and 3.3V/5V compatibility remain as described.

🔒

Secure Payment

100% Safe & Encrypted

🚚

Dispatch in 24 Hours

Fast Order Processing

⭐

4.9★ Google Rating

Rated by 750+ Customers

🇮🇳

Pan India Delivery

Startup India Recognized Company

Trusted by thousands of students and engineers across India

★★★★★ Rated 4.9/5 by 750+ customers on Google

★★★★★

Best place I discovered recently. Got all my components and the staff is also very good and polite.

— Swayam Thorat

★★★★★

Good with you can get whatever you want at low price.

— Ganesh Deshmukh

★★★★★

Shopping for innovative components is always a pleasure here. The staff is knowledgeable and eager to help. Prices are very fair.

— Papai Das

★★★★★

I love the STEM kits they offer for students. It's a great way to inspire young minds and promote creativity. The staff is supportive and knowledgeable.

— Ayush Chauhan

★★★★★

Great experience shopping here. Good product selection and excellent customer support.

— Rahul Sonawane

★★★★★

Wide range of robotics and electronics components available. Perfect place for project requirements and learning kits.

— Verified Google Customer

★★★★★

Excellent service, genuine products and quick support. Highly recommended for students, hobbyists and engineers.