Description
Reviews
| Brand | - |
| Category | Electronic Components Market / Relays |
| Origin | - |
| Communication Protocol | Modbus RTU (RS485) |
| Input Channels | 8-Channel Digital Input |
| Output Channels | 8-Channel Relay Output |
| Max Load per Relay | 10A at 250VAC / 30VDC |
| Operating Voltage | DC 9V - 36V Wide Range |
| Baud Rate Support | 1200 to 115200 bps Adjustable |
| Isolation Protection | Optical Isolation for RS485 and Inputs |
| Mounting Type | DIN Rail or Screw Mount |
| Operating Temperature | -20°C to +70°C |
| Indicator LEDs | Power, Communication, and Channel Status |
Anonymous
Mar 21, 2026
Rating: 5/5
Exceeded expectations
We needed a reliable way to expand our IO count without replacing our main controller. This board fit the bill perfectly. The wide voltage range is a huge plus for unstable power environments.
Anonymous
Mar 11, 2026
Rating: 5/5
Perfect for industrial automation
Integrated this module into our pump control system without any issues. The Modbus communication is stable, and the relay switching is crisp. Highly recommended for factory setups.
Anonymous
Mar 06, 2026
Rating: 4/5
Reliable remote IO solution
Using this to monitor sensors and control motors remotely. The response time is fast enough for our application. The DIN rail clip is sturdy and holds well.
Anonymous
Mar 06, 2026
Rating: 5/5
Great value for money
Been running this for three months controlling lighting arrays in a warehouse. Zero dropouts on the RS485 line even with long cable runs. Excellent product for the price point.
Anonymous
Mar 05, 2026
Rating: 5/5
Easy to configure
As someone new to Modbus, I found the address configuration very intuitive. The LED indicators make troubleshooting incredibly easy. Works flawlessly with our PLC.
Anonymous
Mar 02, 2026
Rating: 4/5
Solid build quality
The board feels very robust and the optical isolation gives me peace of mind. Setup was straightforward using the provided manual. Only wish the terminal blocks were slightly larger for easier wiring.
Q: Does this module support half-duplex communication?
A: Yes, the RS485 interface operates in half-duplex mode, which is standard for Modbus RTU networks.
Q: What is the maximum wire gauge accepted by the terminals?
A: The screw terminals accept wires ranging from 0.5mm² to 2.5mm² (approximately 20 AWG to 14 AWG).
Q: Can I daisy-chain multiple units on the same bus?
A: Absolutely. You can connect up to 32 devices on a single RS485 bus segment by assigning unique slave IDs to each unit.
Q: Are the relay contacts normally open or normally closed?
A: The relays are Form C (SPDT), providing both Normally Open (NO) and Normally Closed (NC) contacts for each channel.
Q: Is there software included to test the relays?
A: We do not bundle proprietary software, but the device is compatible with any standard Modbus master tool like ModScan or QModMaster available online.
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