A
Anonymous
Apr 14, 2026
Rating: 4/5
Solid Module
Hardware is robust. Instructions were a bit vague regarding wiring but support helped me out.
Description
Includes Supporting Software and Videos; Supports Secondary Development and Custom Programming
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Development Boards & Control Boards |
| Origin | - |
| Communication Protocol | Modbus RTU |
| Interface Type | RS-485 Half-Duplex |
| Relay Output | 8 Channels SPDT |
| Digital Input | 8 Channels Opto-isolated |
| Power Supply | 12V to 24V DC |
| Max Contact Load | 10A 250VAC / 10A 30VDC |
| Baud Rate | 9600, 19200, 38400, 115200 bps |
| Device Address | 1 to 247 |
| Operating Temperature | -20°C to 70°C |
| PCB Material | FR-4 Flame Retardant |
5 reviews
A
Anonymous
Apr 07, 2026
Rating: 5/5
Great for Industrial IO
Works perfectly with my SCADA system. The Modbus registers are well documented and easy to map.
A
Anonymous
Mar 23, 2026
Rating: 4/5
Good Value
Terminals are sturdy and accept thick gauge wire. Wish it had a USB config option but RS-485 works fine.
A
Anonymous
Mar 20, 2026
Rating: 5/5
Easy Modbus Integration
Configured quickly with a Python script. Response time is fast enough for our automation needs.
A
Anonymous
Mar 14, 2026
Rating: 5/5
Reliable Relay Board
Using it for lighting control in a warehouse. No dropout issues over the last three months.
5 FAQ
Q: Can this control 3-phase motors directly?
A: It should be used to control contactors for 3-phase motors, not direct motor wiring.
Q: Does the package include terminal screws?
A: Yes, all necessary terminal screws are included in the box.
Q: What cable type is recommended for RS-485?
A: We recommend using shielded twisted pair cable for stable communication.
Q: Can I read the input status remotely?
A: Yes, you can read the input status via Modbus register read commands.
Q: Is optical isolation provided on the inputs?
A: Yes, all 8 digital input channels are opto-isolated to protect the main circuit.
![[Youxin Electronics] Soil Moisture Meter Detection Module, Soil Moisture Sensor for Intelligent Robot Cars](https://www.gosteppe.com/cache/medium/product/3877/legacy-main-eca7a3fa750966e5dca86bbf.webp)
![[Puzhong Brand Store] 51 Microcontroller Learning Board Development Board Jiangxie Tech STC89C52 DIY Kit](https://www.gosteppe.com/cache/medium/product/1885/legacy-main-0474e8371f211cc54ab452b5.webp)
![[Corrosion-Resistant] DFRobot Capacitive Soil Moisture Sensor Module Dry/Wet Detection](https://www.gosteppe.com/cache/medium/product/3259/legacy-main-2f0d3454b36b32391d263648.webp)
