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.
Forest Wooden House Building Blocks - Educational Treehouse Toy for Boys and Girls, Board Game Trendy Blind Box
$12.90
German B&W Safety Case for Folding Knives - EDC Tool Storage Box, Waterproof, Moisture-Proof, Shockproof, Models 1000-3000
$245.00
Fuzao Kids 3D Printing Pen 2026 New Arrival Viral Pretend Play Toy for Girls Educational Gift for Ages 3+ Children's Day
$48.90
UHT Ultra-High Temperature Sterilizer, Room-Temperature Set Yogurt Production Line, Yogurt Processing Equipment, Stirred Yogurt System
$80,640.00
Professional Sketch Blending Kit for Art Students: Gray Tone Pencils, Sponges, Stumps, and Erasers
$4.17
Custom Solid Wood Signboard with Engraved Lettering, Advertising Carved Plaque for Homestays, Tea Rooms, Studios, Wooden Entrance Hanging Sign
$16.90
MOKO Stainless Steel Expandable Dish Drainer - Multi-Function Kitchen Sink Rack for Bowl and Plate Storage
$28.00
WoSporT Factory Direct WST Safety Case 32cm (12.6 inch) - Dustproof, Waterproof, and Impact-Resistant Tool Box
$95.00
South Korea DIO Dental Implant / Implant + Abutment + Crown
$1,580.00
40cm Extended Drill Attachment with Scouring Pad Head for Polishing, Rust Removal, and Marble Countertop Cleaning
$60.00
Authentic Ou Style Tian Kaishu Thousand Character Classic Calligraphy Card for Adult Practice, High-Definition Coated Paper
$55.10
Zer0g Ultra-Light 14g Backpack Waterproof Liner - Polycro Odor-Barrier Pack Liner for Hiking and Trekking
$21.20
Touchmark Liquid Acrylic Markers with Soft Tips, Specialized for Elementary School Art, Ideal Birthday Gift for Children
$18.90
Paper Blending Stump for Sketching - Professional Art Tool with Blade for Highlights, Pastels, and Oil Pastels
$3.74
Wen Zhengming Small Regular Script Love Lotus Essay Brush Tracing Practice Copybook Calligraphy Paper Copying Custom Wholesale for Beginners
$8.80
Heavy-duty Industrial Scouring Pad Roll with Aluminum Oxide for Stainless Steel Polishing and Rust Removal
$57.52
1.06m Leather Slitting Machine – Wide-Range Strip Cutter for Leather, Luggage, and Rubber Materials
$16,250.00
Ceramic Double-Boiler Steaming Bowl with Lid – Ideal for Eggs, Bird's Nest, Custard, and Soup for Home or Commercial Use
$21.11
![[Ya Que You Sheng] DT900 PRO X Calibration File V2 Version EQ Equalization](https://www.gosteppe.com/cache/small/product/269040/legacy-main-a3c0c55ffaafe89c05afced1.webp)
[Ya Que You Sheng] DT900 PRO X Calibration File V2 Version EQ Equalization
$15.00
Ceramic Rabbit Egg Holder, Creative Irregular Egg Stand, Home Breakfast Small Dish, Craft Gift Ornament
$44.78
Hot-Selling Wire Money Tree Bonsai Base – Ceramic Pot for Wealth Attraction Incense
$37.00
Maike Outdoor Sports Waterproof Backpack Wet-Dry Separation Ski Bag Fishing Creek Fins Multi-Function Gear Storage
$152.00
Viral NFC Chip Stickers for Music Wall - Adhesive Read/Write Tags for Song Scanning, Cards, and Photo Frames
$2.38
Rechargeable Generation 2 Personal Air Purifier - Safe Portable Electric Fan for Travel Commuting and Flights
$181.00
Integrated Sink Splash Guard with Silicone Drain Mat - Auto-Draining Countertop Organizer
$23.30
Ultra-Light Aluminum Camping Light Pole – Foldable Mini Lamp Stand for Outdoor Picnics and Tabletop Use
$8.33
bimoz Under-Desk Cable Organizer No-Drill Shelf for Home Office Socket Strip Router Wire Data Cable Fixer Minimalist Wire Winder Dual-Side Mount Ventilated Design
$40.80
Extended Deep-Cut External Thread Tool Holder with Relief Groove for Swiss-Type Lathe HKFF42R6001
$15.50
Meiao Dental Imported Dental Implant Package, Swiss ITI Straumann Implant Abutment, False Teeth, Filling, and Planting
$14,188.00
Assorted Colors Kids' Painting Crayons - Washable Oil Pastels in 12, 18, 24, or 36 Colors for Graffiti and Coloring
$2.47
