Industrial Modbus RTU 8-Channel Relay Module (D) with Digital Input and RS485 Interface
We have ✅ 13 available of the WS-26517 in our Sydney warehouse. An extra 100 units will be available shortly.
The Industrial Modbus RTU 8-Channel Relay Module (D) is a reliable RS485-controlled relay module with 8 digital inputs. Designed for industrial applications, it supports the Modbus RTU protocol and includes multiple isolation protections like power, magnetic, and TVS diode isolation. It features an ABS rail-mounted enclosure for durability and easy installation, making it ideal for automation and industrial control systems.
Features
- Reliable Communication: RS485 with Modbus RTU support, configurable address (1-255), and multi-device cascading.
- Multiple Protections: Power isolation, magnetic isolation, TVS diode, and optocoupler isolation for noise immunity.
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Flexible Relay Control:
- 8 relay outputs with a dedicated driver chip.
- Flash-on/flash-off functions for timed switching.
- Digital inputs support linkage or toggle control.
- Wide Voltage Range: Operates on 7-36V DC.
- Durable Build: ABS rail-mount case for secure installation.
- LED Indicators: Status LEDs for MCU operation, TX, and RX communication.
Specifications
- Power: 7-36V DC
- Interface: RS485
- Baud Rate: 4800 - 256000 (default: 9600, N, 8, 1)
- Relay Outputs: 8 channels (≤10A 250VAC/30VDC)
- Digital Inputs: 8 (5-36V, NPN/PNP), optocoupler-isolated
- Protocol: Modbus RTU
- RS485 Address: 1-255
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Indicators:
- STA: MCU status
- TXD: Transmit data
- RXD: Receive data
Setup & Testing
- Driver Installation: Use provided FTDI drivers.
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RS485 Testing:
- Connect A-A, B-B.
- Use SSCOM or Modbus Poll software to send commands.
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Compatible with:
- Raspberry Pi (via RS485 CAN HAT, Python control)
- STM32 (via RS485 CAN Shield, C control)
- Arduino (via RS485 CAN Shield, Arduino IDE)
Applications
- Industrial automation
- Smart home systems
- Remote relay control
- Equipment monitoring
Resources & Support
- Software: SSCOM, Modbus Poll, SecureCRT
- Example Code: Python, C, Arduino
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FAQs:
- Works with Windows, Mac, Linux, and Android.
- Change relay modes with Modbus commands.
- Ensure proper A-B wiring for RS485 stability.
The Industrial Modbus RTU 8-Channel Relay Module (D) with Digital Input and RS485 Interface appears in the following collections:
SKU WS-26517
by Little Bird
