Waveshare Industrial Modbus RTU 8-Channel Relay Module RS485 Bus, Multi Protection
This is an industrial 8-ch relay module controlled via RS485 bus, utilizing Modbus RTU protocol. It features embedded protection circuits such as power isolation, ADI magnetically isolation, and TVS diode, etc. It also comes with an ABS enclosure.
The Modbus RTU Relay is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipment’s and/or applications with high communication requirement.
Features
- Configurable device address (1~255), multi devices can be cascaded on RS485 bus
- Features flash-on, flash-off function, by passing 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, needs no extra power supply for the isolated terminal
- Onboard unibody ADI magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
- Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic
- Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
- Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection
- High quality relay, contact rating: ≤10A 250VAC/30VDC
- Rail-mounted ABS plastic enclosure, easy to install, safe to use
- 3 LEDs for indicating the MCU status and signal transceiving status
Specifications
- Power supply voltage: 5V
- Communication interface: RS485
- Baudrate: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
- Default communication format: 9600, N, 8, 1
- Relay channels: 8
- Contact form: 1NO 1NC
- Communication protocol: Standard Modbus RTU protocol
- RS485 address: 1~255
- RS485 terminal protection: 600W lightning-proof and surge-suppress, 15KV ESD protection (reserved 120R balancing resistor solder pads)
- LED indicators:
- STA: MCU indicator, keep flashing when the MCU normally working
- TXD: TX indicator, light up when sending data
- RXD: RX indicator, light up when receiving data
Package Includes
- Modbus RTU Relay x1
- Power adapter US plug 5V/2A 5.5/2.1 x1
- Power adapter EU head x1
Useful link
Video
Technical Specifications
| Brand | WAVESHARE |
|---|---|
| Interface / Protocol | RS485 |
| SKU | AI0825 |
| Weight | 0.55 kg |
| Availability | In Stock |
Applications & Use Cases
The Waveshare Industrial Modbus RTU 8-Channel Relay Module RS485 Bus, Multi 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
Priya Goyal –
Perfect Waveshare Industrial Modbus RTU 8-Channel Relay for my IoT project. Controlling appliances remotely works flawlessly.
Prateek Saini (verified owner) –
Love this Waveshare Industrial Modbus RTU 8-Channel Relay. Click sound is satisfying and switching is instantaneous.
Sunil Vohra –
This Waveshare Industrial Modbus RTU 8-Channel Relay works perfectly with my Arduino. Easy to wire and control.
Rajesh Chopra (verified owner) –
Very satisfied. My smart home system runs on these Waveshare Industrial Modbus RTU 8-Channel Relay modules. Totally reliable.
Chitra Khanna (verified owner) –
Outstanding quality! This Waveshare Industrial Modbus RTU 8-Channel Relay has been running 24/7 for months without a single failure.
Ishan Tiwari (verified owner) –
Good Waveshare Industrial Modbus RTU 8-Channel Relay. Works well. LED indicators are helpful for debugging.
Karan Kohli (verified owner) –
Excellent Waveshare Industrial Modbus RTU 8-Channel Relay! Switching is clean and reliable. Using it for home automation.
Isha Shetty –
Superb Waveshare Industrial Modbus RTU 8-Channel Relay! Using it to control my garden irrigation system. Very dependable.
Harshit Modi (verified owner) –
Great Waveshare Industrial Modbus RTU 8-Channel Relay. Easy to integrate with NodeMCU for WiFi-based control.
Varun Rajan (verified owner) –
Great quality Waveshare Industrial Modbus RTU 8-Channel Relay. All channels working. Optocoupler isolation is a nice feature.
Anand Kamath (verified owner) –
Decent Waveshare Industrial Modbus RTU 8-Channel Relay. Trigger voltage is compatible with both 3.3V and 5V logic.
Piyush Dhillon (verified owner) –
Good Waveshare Industrial Modbus RTU 8-Channel Relay. Works well. LED indicators are helpful for debugging.
Rohan Verma –
Good quality Waveshare Industrial Modbus RTU 8-Channel Relay. Using it for my college project. Performs as expected.
Aditya Gupta –
Very satisfied. My smart home system runs on these Waveshare Industrial Modbus RTU 8-Channel Relay modules. Totally reliable.
Mohit Dubey (verified owner) –
Nice Waveshare Industrial Modbus RTU 8-Channel Relay. Relay clicks are clear. Terminal connections are solid.
Sumit Gupta –
This Waveshare Industrial Modbus RTU 8-Channel Relay is robust and well built. PCB quality is excellent.
Diya Khurana (verified owner) –
Good Waveshare Industrial Modbus RTU 8-Channel Relay. Works well. LED indicators are helpful for debugging.
Milan Chopra (verified owner) –
Decent Waveshare Industrial Modbus RTU 8-Channel Relay. Trigger voltage is compatible with both 3.3V and 5V logic.
Lakshya Singh –
Very satisfied. My smart home system runs on these Waveshare Industrial Modbus RTU 8-Channel Relay modules. Totally reliable.
Nandini Reddy (verified owner) –
Outstanding quality! This Waveshare Industrial Modbus RTU 8-Channel Relay has been running 24/7 for months without a single failure.
Vaishali Vyas (verified owner) –
Very satisfied. My smart home system runs on these Waveshare Industrial Modbus RTU 8-Channel Relay modules. Totally reliable.
Paras Grewal (verified owner) –
Love this Waveshare Industrial Modbus RTU 8-Channel Relay. Click sound is satisfying and switching is instantaneous.
Uday Dhillon (verified owner) –
Very satisfied. My smart home system runs on these Waveshare Industrial Modbus RTU 8-Channel Relay modules. Totally reliable.
Kavya Dave –
Good quality Waveshare Industrial Modbus RTU 8-Channel Relay. Using it for my college project. Performs as expected.
Rahul Vohra (verified owner) –
Excellent Waveshare Industrial Modbus RTU 8-Channel Relay! Switching is clean and reliable. Using it for home automation.
Amit Krishnan (verified owner) –
Very satisfied. My smart home system runs on these Waveshare Industrial Modbus RTU 8-Channel Relay modules. Totally reliable.
Ankit Jain –
Great quality Waveshare Industrial Modbus RTU 8-Channel Relay. All channels working. Optocoupler isolation is a nice feature.
Dev Luthra (verified owner) –
Perfect Waveshare Industrial Modbus RTU 8-Channel Relay for my IoT project. Controlling appliances remotely works flawlessly.
Kiara Srivastava (verified owner) –
Very satisfied. My smart home system runs on these Waveshare Industrial Modbus RTU 8-Channel Relay modules. Totally reliable.
Sanya Grewal (verified owner) –
Outstanding quality! This Waveshare Industrial Modbus RTU 8-Channel Relay has been running 24/7 for months without a single failure.
Ankur Luthra (verified owner) –
Superb Waveshare Industrial Modbus RTU 8-Channel Relay! Using it to control my garden irrigation system. Very dependable.