Description:
Waveshare 4-Ch RS485 to RJ45 Ethernet Serial Server, 4 Channels RS485 Independent Operation, Rail-mount Industrial Isolated Serial Module, Optional PoE Function is a multi-functional device data acquisitor / IoT gateway with 4-ch RS485 and an Ethernet port (PoE version optional), small in size, easy to install, and cost-effective. It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring, meeting various application scenarios.
Features:
- 4-ch RS485 can work independently without affecting each other at the same time, enabling more effective data transmission.
- Combines multiple functions in one, including serial server, Modbus gateway, MQTT gateway, and RS485 to JSON, etc.
- Adopts screw terminal for stable power input.
- Wall-mount and rail-mount case design, easy to install, for quick deployment and expansion.
Package includes:
1 x 4-CH RS485 TO POE ETH (B)
1 x Rail-mount buckle
1 x Screwdriver
1 xScrews pack
Technical Specifications
| Brand | WAVESHARE |
|---|---|
| Model | RS485 |
| Interface / Protocol | RS485 |
| SKU | AI7621 |
| Weight | 0.27 kg |
| Availability | Out of Stock |
Applications & Use Cases
The Waveshare 4-Ch RS485 to RJ45 Ethernet Serial Server, 4 Channels RS485 Independent Operation, Rail-mount Industrial Isolated Serial Module, Optional PoE Function 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

Anirudh Hegde (verified owner) –
This Waveshare 4-Ch RS485 to RJ45 Ethernet is high quality. Dimensions are accurate and finish is smooth.
Anand Rajan (verified owner) –
Love this Waveshare 4-Ch RS485 to RJ45 Ethernet. Fits perfectly with my existing hardware. No modifications needed.
Arun Arora –
Great quality Waveshare 4-Ch RS485 to RJ45 Ethernet. Using it in my CNC project. Perfect tolerance.
Nakul Dubey (verified owner) –
Great quality Waveshare 4-Ch RS485 to RJ45 Ethernet. Using it in my CNC project. Perfect tolerance.
Mukesh Rajan (verified owner) –
Very satisfied with this Waveshare 4-Ch RS485 to RJ45 Ethernet. My mechanical assembly works perfectly now.
Neeraj Pandey (verified owner) –
Outstanding quality! This Waveshare 4-Ch RS485 to RJ45 Ethernet is precisely made. No play or wobble.
Neeraj Negi (verified owner) –
Perfect Waveshare 4-Ch RS485 to RJ45 Ethernet for my 3D printer upgrade. Improved print quality noticeably.
Advik Mishra (verified owner) –
Perfect Waveshare 4-Ch RS485 to RJ45 Ethernet for my 3D printer upgrade. Improved print quality noticeably.
Sachin Bose (verified owner) –
Nice Waveshare 4-Ch RS485 to RJ45 Ethernet. Precision is good for the price. Serves its purpose well.
Abhishek Tandon (verified owner) –
Decent Waveshare 4-Ch RS485 to RJ45 Ethernet. Minor burring that was easy to clean up. Functions well.
Vivek Tiwari (verified owner) –
Love this Waveshare 4-Ch RS485 to RJ45 Ethernet. Fits perfectly with my existing hardware. No modifications needed.
Meera Pandey (verified owner) –
Nice Waveshare 4-Ch RS485 to RJ45 Ethernet. Precision is good for the price. Serves its purpose well.
Priya Bose (verified owner) –
Nice Waveshare 4-Ch RS485 to RJ45 Ethernet. Precision is good for the price. Serves its purpose well.
Kunal Khurana (verified owner) –
Superb Waveshare 4-Ch RS485 to RJ45 Ethernet! Material quality is excellent. Very durable and well-made.
Arnav Tandon (verified owner) –
Perfect Waveshare 4-Ch RS485 to RJ45 Ethernet for my 3D printer upgrade. Improved print quality noticeably.
Ishaan Kulkarni (verified owner) –
Excellent Waveshare 4-Ch RS485 to RJ45 Ethernet! Precision machined and perfect fit. Great for my project.
Pranav Kulkarni (verified owner) –
Love this Waveshare 4-Ch RS485 to RJ45 Ethernet. Fits perfectly with my existing hardware. No modifications needed.
Arjun Tandon –
Great quality Waveshare 4-Ch RS485 to RJ45 Ethernet. Using it in my CNC project. Perfect tolerance.
Hemant Kohli (verified owner) –
Very satisfied with this Waveshare 4-Ch RS485 to RJ45 Ethernet. My mechanical assembly works perfectly now.
Priya Bajaj –
Perfect Waveshare 4-Ch RS485 to RJ45 Ethernet for my 3D printer upgrade. Improved print quality noticeably.
Naman Krishnan (verified owner) –
Excellent Waveshare 4-Ch RS485 to RJ45 Ethernet! Precision machined and perfect fit. Great for my project.
Vidya Bhat (verified owner) –
Nice Waveshare 4-Ch RS485 to RJ45 Ethernet. Precision is good for the price. Serves its purpose well.
Ankit Arora (verified owner) –
Good Waveshare 4-Ch RS485 to RJ45 Ethernet. Quality is decent. Fits well with standard components.
Parth Yadav (verified owner) –
Superb Waveshare 4-Ch RS485 to RJ45 Ethernet! Material quality is excellent. Very durable and well-made.
Pooja Naidu –
This Waveshare 4-Ch RS485 to RJ45 Ethernet is high quality. Dimensions are accurate and finish is smooth.
Isha Kapoor –
Superb Waveshare 4-Ch RS485 to RJ45 Ethernet! Material quality is excellent. Very durable and well-made.