Description
Reviews
| Brand | - |
| Category | Electronic Components Market / Relays |
| Origin | - |
| Communication Protocol | Modbus RTU (RS485) |
| Relay Channels | 8 Channels |
| Input Type | Dry Contact / Wet Contact Switchable |
| Operating Voltage | DC 9V - 24V |
| Max Load Current | 10A per Channel |
| Baud Rate Support | 1200 to 115200 bps |
| Isolation Protection | Optocoupler Isolated Inputs |
| Mounting Style | DIN Rail or Screw Mount |
| Indicator LEDs | Power, Communication, and Relay Status |
| Operating Temperature | -20°C to +70°C |
Anonymous
Mar 21, 2026
Rating: 5/5
Reliable data acquisition
We deployed ten of these units across our warehouse. They have been running 24/7 for three months without a single dropout. The input isolation prevents noise issues effectively.
Anonymous
Mar 19, 2026
Rating: 5/5
Great for smart home backend
Using this to control lighting and HVAC in a custom smart home setup. The RS485 long-distance communication is stable even through thick walls. Very happy with the purchase.
Anonymous
Mar 18, 2026
Rating: 4/5
Solid build quality, clear documentation
The board feels robust and the terminal blocks are high quality. Documentation could be slightly more detailed regarding specific register maps, but overall it works exactly as described.
Anonymous
Mar 07, 2026
Rating: 4/5
Good value for money
For the price, you get a lot of functionality. Setting up the baud rate required a bit of trial and error with my converter, but once configured, it has been rock solid.
Anonymous
Mar 06, 2026
Rating: 5/5
Exceeded expectations
The response time is incredibly fast. I was worried about latency in the serial chain, but the polling speed is sufficient for real-time control applications. Excellent product.
Anonymous
Mar 03, 2026
Rating: 5/5
Perfect for Industrial Automation Projects
This module integrated seamlessly with our existing PLC system. The Modbus addressing was straightforward, and the relay switching is crisp and reliable. Highly recommended for remote IO tasks.
Q: What is the maximum wire gauge for the terminal blocks?
A: The terminal blocks accommodate wires from 0.2 mm² to 2.5 mm² (approximately 24 AWG to 12 AWG).
Q: Can I power this directly from a 24V DC supply?
A: Yes, the module operates within a DC 9V to 24V range, so a standard 24V DC industrial power supply is perfectly suitable.
Q: Are the relay outputs Form A (NO) or Form C (NO/NC)?
A: The relay outputs are Form C, providing both Normally Open (NO) and Normally Closed (NC) contacts for each channel.
Q: Is there software provided to configure the device?
A: The device uses standard Modbus registers. While we provide a register map document, configuration is typically done via your own SCADA system, PLC, or generic Modbus tester software.
Q: Does this module support ASCII mode or only RTU?
A: This specific model supports Modbus RTU mode exclusively. It does not support Modbus ASCII.
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