The Waveshare Industrial Modbus RTU 8-ch Relay Module (D) is a robust and reliable solution designed for industrial automation applications. Featuring 8 channels of relay outputs, digital input ports, and an RS485 interface, this module offers versatile connectivity and control capabilities.
The module supports the Modbus RTU protocol, facilitating seamless communication and integration with industrial control systems and PLCs. With the RS485 interface, users can establish reliable serial communication over long distances, making it suitable for industrial environments with extended cable runs.
Built with multi-isolation protection circuits, including optocouplers and surge protection, the module ensures reliable operation and safeguards against electrical interference and voltage spikes. This enhances the durability and stability of the module, even in harsh industrial environments.
With a wide power supply range of 7 to 36V, the module offers flexibility in powering options, accommodating various industrial power sources commonly found in different applications. This wide voltage range ensures compatibility and reliability in diverse operating conditions.
The Waveshare Industrial Modbus RTU 8-ch Relay Module (D) is an ideal choice for industrial automation projects requiring reliable relay control and digital input monitoring. Its robust construction, support for Modbus RTU protocol, multi-isolation protection circuits, and wide power supply range make it a versatile and dependable solution for a wide range of industrial applications.
Features:
- Configurable device address (1~255), multi-devices can be cascaded on RS485 bus
- Features flash-on, and flash-off functions, by passing an argument to the command, it is possible to turn on the relay for a while and then close it automatically
- Onboard unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal
- Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
- Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightning proof & anti-electrostatic
- Onboard Optocoupler isolation, prevents the relay from being interfered with by high-voltage circuit
- Adopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability
- Supports passive and active digital input, with bi-directional optocoupler isolation, a built-in debouncing algorithm. The relay supports digital input linkage control or toggle control
- Reverse-proof circuit prevents the circuit from being damaged accidentally by an incorrect connection
- High-quality relay, contact rating: ≤10A 250VAC/30VDC
- Rail-mounted ABS plastic enclosure, easy to install, safe to use
- Multiple LEDs for indicating the MCU status and signal transceiving status
Specification:
| Power Supply (V) | 7~36V |
|---|---|
| Communication Mode | RS485 |
| Baud Rate (bps) | 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 |
| Relay Channels | 8 |
| Contact Form: | 1NO 1NC |
| Contact Rating | ≤10A 250VAC/30VDC |
| No. of Inputs | Digital Inputs 8 |
| Input Type | NPN or PNP |
Package Includes:
1 x Waveshare Industrial Modbus RTU 8-ch Relay Module (D) With Digital Input and RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply
Technical Specifications
| Brand | WAVESHARE |
|---|---|
| Operating Voltage | 36V |
| Interface / Protocol | RS485 |
| SKU | AI6689 |
| Weight | 0.48 kg |
| Availability | In Stock |
Applications & Use Cases
The Waveshare Industrial Modbus RTU 8-ch Relay Module (D) With Digital Input and RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply 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
Devansh Rawat (verified owner) –
Decent Waveshare Industrial Modbus RTU 8-ch Relay. Voltage output is accurate. Compact form factor is a plus.
Akash Garg (verified owner) –
This Waveshare Industrial Modbus RTU 8-ch Relay is reliable and efficient. Running my IoT setup 24/7 with no issues.
Vidya Desai –
Great Waveshare Industrial Modbus RTU 8-ch Relay. Voltage is rock solid under varying loads. Highly recommended.
Simran Bisht (verified owner) –
Decent Waveshare Industrial Modbus RTU 8-ch Relay. Voltage output is accurate. Compact form factor is a plus.
Tanmay Rao (verified owner) –
Excellent Waveshare Industrial Modbus RTU 8-ch Relay! Output is stable and reliable. Perfect for my electronics project.
Aanya Bisht (verified owner) –
Nice Waveshare Industrial Modbus RTU 8-ch Relay. Works as expected for my power needs. Good efficiency.
Mukesh Bose (verified owner) –
Decent Waveshare Industrial Modbus RTU 8-ch Relay. Voltage output is accurate. Compact form factor is a plus.
Abhishek Rawat (verified owner) –
Nice Waveshare Industrial Modbus RTU 8-ch Relay. Works as expected for my power needs. Good efficiency.
Rakesh Vyas (verified owner) –
Superb Waveshare Industrial Modbus RTU 8-ch Relay! Efficiency is high and it runs cool even under load.
Om Desai –
Good Waveshare Industrial Modbus RTU 8-ch Relay. Output is stable. Gets slightly warm under full load but nothing concerning.
Sanjay Rawat (verified owner) –
Nice Waveshare Industrial Modbus RTU 8-ch Relay. Works as expected for my power needs. Good efficiency.
Anjali Sharma (verified owner) –
Nice Waveshare Industrial Modbus RTU 8-ch Relay. Works as expected for my power needs. Good efficiency.
Manish Batra –
Very satisfied with this Waveshare Industrial Modbus RTU 8-ch Relay. Using it in my solar project, charges perfectly.
Yashwant Banerjee –
Great Waveshare Industrial Modbus RTU 8-ch Relay. Voltage is rock solid under varying loads. Highly recommended.
Amit Das (verified owner) –
Nice Waveshare Industrial Modbus RTU 8-ch Relay. Works as expected for my power needs. Good efficiency.
Advik Negi (verified owner) –
This Waveshare Industrial Modbus RTU 8-ch Relay is exactly what I needed. Output current capacity is as advertised.
Shubham Pillai –
Decent Waveshare Industrial Modbus RTU 8-ch Relay. Voltage output is accurate. Compact form factor is a plus.
Eshan Shah –
Good Waveshare Industrial Modbus RTU 8-ch Relay. Output is stable. Gets slightly warm under full load but nothing concerning.
Krishna Trivedi (verified owner) –
This Waveshare Industrial Modbus RTU 8-ch Relay is exactly what I needed. Output current capacity is as advertised.
Utkarsh Negi –
Perfect Waveshare Industrial Modbus RTU 8-ch Relay for my portable project. Battery life is better than expected.
Anand Banerjee (verified owner) –
Okay Waveshare Industrial Modbus RTU 8-ch Relay. Output is slightly off from specified but within usable range.
Sandhya Banerjee (verified owner) –
Great quality Waveshare Industrial Modbus RTU 8-ch Relay. Powering my entire project board with this. Very reliable.