Looking for Rs485 Converter? Waveshare Rail-mount TTL To RS485 Galvanic isolated Converter, Multi-Isolation Protection is available at Zbotic with fast shipping across India.
Waveshare Rail-mount TTL To RS485 Galvanic isolated Converter, 600W Lightning proof & Anti-Surge, Multi-Isolation Protection. TTL TO RS485 (B) is an industrial-grade rail-mounted electrically isolated TTL-to-RS485 serial converter.
Features:
- Compatible with TTL/RS422 standard, converting the TTL signal into a balanced differential RS422 signal, supporting half-duplex communication
- Compatible with 3.3V ~ 5V TTL signal level, with anti-reverse connection and anti-over-voltage circuit on the power supply side
- Onboard unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal
- Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, and low power consumption
- Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, and anti-electrostatic
- Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provide over-current/over-voltage protection, improve shock resistance
Useful Link:
https://www.waveshare.com/wiki/TTL_TO_RS485_(B)
Specification:
| Model Type: | Converter |
|---|---|
| Device Port | TTL/RS485 standard compatible |
| Connector: | Screw terminal |
| Protection | 600W lightning proof and surge-suppress, 15KV ESD protection |
| Resistor | Terminal120R, enabled/disabled via a switch |
| Transmission Distance | About 1.2km |
| Transmission Mode | Point-to-multipoint (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more) |
Package Includes:
1 x Waveshare Rail-mount TTL To RS485 Galvanic isolated Converter, Multi-Isolation Protection.
Waveshare Rail-mount TTL To RS485 Galvanic isolated Overview
The Waveshare Rail-mount TTL To RS485 Galvanic Isolated Converter is an industrial-grade DIN-rail module that converts 3.3V–5V TTL or RS422 signals into balanced differential RS485 output. Its built-in multi-isolation protection ensures reliable serial communication in electrically noisy environments.
Key Features of Waveshare Rail-mount TTL To RS485 Galvanic isolated
- Galvanic isolation between TTL/RS485 ports and power supply for noise immunity
- Supports 3.3V–5V TTL signal level with anti-reverse connection and over-voltage protection
- Compatible with TTL/RS422 standards and half-duplex RS485 communication
- 600W lightning proof and anti-surge circuitry for robust field performance
- DIN-rail mounting design saves panel space and simplifies installation
- Fast shipping from Zbotic across India ensures quick deployment
Applications and Use Cases
- Industrial automation: linking microcontrollers or PLCs to RS485 networks
- Building management systems: connecting HVAC controllers over long cable runs
- Energy metering: isolated data collection from remote meters
- SCADA installations: safeguarding serial links against ground loops and surges
- Factory floor data acquisition: noise-resistant communication in motor-rich environments
How to Use Waveshare Rail-mount TTL To RS485 Galvanic isolated
Snap the converter onto a standard DIN rail, connect a stable 3.3V–5V power supply to its input terminals, then wire your device’s TTL TX/RX or RS422 lines to the TTL side. On the RS485 side, attach A and B differential lines to your bus. Ensure proper grounding and power on the module—the onboard isolation and protection circuits handle the rest.
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
What power supply voltage does this converter require?
The Waveshare TTL to RS485 converter supports a 3.3V to 5V DC input with built-in over-voltage and reverse-connection protection.
Can I use this module for RS422 communication?
Yes. The device is compatible with both TTL and RS422 signal levels and converts them into half-duplex RS485 output.
Does it provide surge and lightning protection?
Absolutely. This converter features 600W lightning proof and anti-surge circuits along with multi-isolation protection to secure your serial links.
Technical Specifications
| Brand | WAVESHARE |
|---|---|
| Interface / Protocol | RS485, TTL |
| SKU | AI6638 |
| Weight | 0.09 kg |
| Availability | Out of Stock |
Applications & Use Cases
The Waveshare Rail-mount TTL To RS485 Galvanic isolated Converter, Multi-Isolation Protection 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
- Genuine WAVESHARE product sourced from authorized channels



Manoj Rajan (verified owner) –
This Waveshare Rail-mount TTL To RS485 Galvanic performs flawlessly. Voltage regulation is precise and consistent.
Lakshmi Kohli (verified owner) –
Great quality Waveshare Rail-mount TTL To RS485 Galvanic. Powering my entire project board with this. Very reliable.
Hemant Bhatt (verified owner) –
Good Waveshare Rail-mount TTL To RS485 Galvanic. Output is stable. Gets slightly warm under full load but nothing concerning.
Vaishali Verma (verified owner) –
Okay Waveshare Rail-mount TTL To RS485 Galvanic. Output is slightly off from specified but within usable range.
Meera Banerjee (verified owner) –
Bought multiple units of this Waveshare Rail-mount TTL To RS485 Galvanic. All consistent quality. Zbotic is reliable.
Deepika Chatterjee (verified owner) –
Love this Waveshare Rail-mount TTL To RS485 Galvanic. Compact size and excellent performance. Worth the price.
Sunil Das (verified owner) –
This Waveshare Rail-mount TTL To RS485 Galvanic is reliable and efficient. Running my IoT setup 24/7 with no issues.
Devansh Patil (verified owner) –
Excellent Waveshare Rail-mount TTL To RS485 Galvanic! Output is stable and reliable. Perfect for my electronics project.
Vaishali Kamath –
Outstanding! This Waveshare Rail-mount TTL To RS485 Galvanic supplies clean power to my sensitive circuits. No noise at all.
Rajesh Ghosh (verified owner) –
Perfect Waveshare Rail-mount TTL To RS485 Galvanic for my portable project. Battery life is better than expected.
Karan Das (verified owner) –
Perfect Waveshare Rail-mount TTL To RS485 Galvanic for my portable project. Battery life is better than expected.
Kunal Solanki (verified owner) –
Okay Waveshare Rail-mount TTL To RS485 Galvanic. Output is slightly off from specified but within usable range.
Shubham Desai (verified owner) –
Very satisfied with this Waveshare Rail-mount TTL To RS485 Galvanic. Using it in my solar project, charges perfectly.
Sumit Yadav (verified owner) –
Decent Waveshare Rail-mount TTL To RS485 Galvanic. Voltage output is accurate. Compact form factor is a plus.