Description:
Onboard power and signal isolation, provide stable isolated voltage, high reliability and strong anti-interference. Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, anti-electrostatic. Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage protection, improves shock resistance.
TTL TO RS422 (B) is an industrial-grade rail-mounted electrically isolated TTL-to-RS485 serial converter.
Features:
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Compatible with TTL/RS422 standard, converting the TTL signal into differential RS422 signal, support full duplex communication
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Compatible with 3.3V ~ 5V TTL signal level, provides anti-reverse and over-voltage protection for power supply interface
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Onboard unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal
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Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
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Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, anti-electrostatic
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Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provide over-current/over-voltage protection, improve shock resistance
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Onboard RS422 input and output terminal 120R resistor, enabled/disabled via jumper
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Case: Rail-mount ABS case, suitable for 35mm DIN rail
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Transmission Mode: full duplex mode, point-to-multipoint (up to 256 nodes, it is recommended to use repeaters for 16 nodes or more)
Package Includes:
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1 x Waveshare Rail-mount TTL To RS422 Galvanic isolated Converter, Anti-surge, Multiple Isolation Protection.
Technical Specifications
| Brand | WAVESHARE |
|---|---|
| Interface / Protocol | TTL |
| SKU | AI7669 |
| Weight | 0.14 kg |
| Availability | Out of Stock |
Applications & Use Cases
The Waveshare Rail-mount TTL To RS422 Galvanic isolated Converter, Anti-surge, Multiple 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


Daksh Reddy (verified owner) –
Superb Waveshare Rail-mount TTL To RS422 Galvanic! Efficiency is high and it runs cool even under load.
Raj Malhotra (verified owner) –
Good quality Waveshare Rail-mount TTL To RS422 Galvanic. Ripple is low. Suitable for most electronics projects.
Sanjay Chauhan (verified owner) –
Very satisfied with this Waveshare Rail-mount TTL To RS422 Galvanic. Using it in my solar project, charges perfectly.
Lokesh Solanki (verified owner) –
This Waveshare Rail-mount TTL To RS422 Galvanic performs flawlessly. Voltage regulation is precise and consistent.
Sanya Vohra (verified owner) –
This Waveshare Rail-mount TTL To RS422 Galvanic is exactly what I needed. Output current capacity is as advertised.
Pallavi Mehta (verified owner) –
Nice Waveshare Rail-mount TTL To RS422 Galvanic. Works as expected for my power needs. Good efficiency.
Lakshya Das –
Okay Waveshare Rail-mount TTL To RS422 Galvanic. Output is slightly off from specified but within usable range.
Bharat Arora –
Good Waveshare Rail-mount TTL To RS422 Galvanic. Output is stable. Gets slightly warm under full load but nothing concerning.
Shreyas Joshi –
Very satisfied with this Waveshare Rail-mount TTL To RS422 Galvanic. Using it in my solar project, charges perfectly.
Paras Tiwari (verified owner) –
Outstanding! This Waveshare Rail-mount TTL To RS422 Galvanic supplies clean power to my sensitive circuits. No noise at all.
Vishal Singh (verified owner) –
Good quality Waveshare Rail-mount TTL To RS422 Galvanic. Ripple is low. Suitable for most electronics projects.
Aryan Dave (verified owner) –
This Waveshare Rail-mount TTL To RS422 Galvanic is exactly what I needed. Output current capacity is as advertised.
Hitesh Khanna (verified owner) –
Love this Waveshare Rail-mount TTL To RS422 Galvanic. Compact size and excellent performance. Worth the price.
Sumit Arora –
Bought multiple units of this Waveshare Rail-mount TTL To RS422 Galvanic. All consistent quality. Zbotic is reliable.
Rashmi Dubey –
Decent Waveshare Rail-mount TTL To RS422 Galvanic. Voltage output is accurate. Compact form factor is a plus.