Waveshare Modbus RTU 8-Channel Relay Module RS485

Premium industrial-grade relay control module from Waveshare. Perfect for automation, IoT, and industrial applications requiring reliable remote switching capabilities.

Product Overview

The Waveshare Modbus RTU 8-channel Relay Module is a professional-grade switching device designed for industrial automation and control systems. With RS485 communication and Modbus RTU protocol support, this module enables seamless integration into complex automation networks.

Key Features

• 8 Independent Relay Channels - Control up to 8 devices simultaneously
• Modbus RTU Protocol - Industry-standard communication for easy integration
• RS485 Interface - Long-distance, noise-resistant communication
• Wide Voltage Support - Compatible with various power supply requirements
• Isolated Relay Outputs - Protects control circuits from high-voltage loads
• LED Status Indicators - Real-time feedback for each relay channel
• DIN Rail Mountable - Professional installation in control cabinets

Technical Specifications

Specification	Details
Communication Protocol	Modbus RTU
Interface	RS485
Number of Channels	8
Relay Type	Electromagnetic
Contact Rating	10A @ 250VAC / 30VDC
Control Voltage	12-24VDC
Baud Rate	9600-115200 bps
Response Time	<100ms
Operating Temperature	-20 degreesC to +60 degreesC
Dimensions	Compact industrial form factor
Origin	Original/Authentic
Warranty	7-day warranty on manufacturing defects
Support	24/7 Email & WhatsApp

Why Choose This Product?

100% Authentic - Sourced directly from authorized Waveshare distributors

Industrial Grade - Proven reliability in demanding applications

Fast Shipping - 1-5 days from Bengaluru warehouse, delivered in 7-8 days

Complete Support - Technical assistance throughout product lifecycle

Cost-Effective - Professional functionality at competitive pricing

Easy Integration - Standard Modbus RTU protocol, widely supported

Applications

Industrial Automation

• Manufacturing equipment control
• HVAC system management
• Lighting automation
• Motor control and switching

IoT & Smart Systems

• Remote device activation
• Building automation
• Smart home integration
• Environmental monitoring systems

Energy Management

• Load switching and distribution
• Power supply management
• Equipment sequencing
• Energy monitoring systems

Laboratory & Education

• Experimental automation
• Control system learning
• Prototyping and development
• Research applications

What's Included

• 1x Waveshare Modbus RTU 8-Channel Relay Module
• RS485 connection documentation
• Modbus RTU protocol guide
• Wiring diagram and pinout information
• Quick start guide
• Technical support contact details

Connectivity & Integration

RS485 Communication:

• 2-wire or 4-wire connection options
• Daisy-chain multiple modules
• Maximum cable length: 1200m
• Supports up to 32 devices on single bus

Protocol Support:

• Full Modbus RTU implementation
• Standard holding registers for relay control
• Input registers for status monitoring
• Easy integration with PLC, microcontroller, and industrial systems

Installation & Setup

1. Power Connection - Connect 12-24VDC power supply
2. RS485 Wiring - Connect to master controller (PLC/microcontroller)
3. Relay Outputs - Connect load circuits to relay terminals
4. Configuration - Set device address via DIP switches
5. Testing - Verify relay operation with Modbus commands

Performance Benefits

• Reliable Switching - Electromagnetic relays with proven durability
• Noise Immunity - RS485 differential signaling reduces interference
• Scalability - Daisy-chain multiple modules for expanded control
• Real-time Feedback - LED indicators for instant status verification
• Safe Operation - Isolated outputs protect control circuits

Quality Assurance

Authentic Waveshare product with full verification

Comprehensive testing before dispatch

7-day warranty on manufacturing defects included

Quality packaging for safe delivery

Expert technical support team available

Frequently Asked Questions

Is this an authentic Waveshare product?

Yes, 100% authentic. Sourced from authorized Waveshare distributors with full authentication verification and warranty support.

What warranty is included?

Full 7-day warranty on manufacturing defects covering all defects in materials and workmanship. Extended warranty options available.

How quickly will I receive this?

Standard shipping: 7-8 days to most of India from our Bengaluru warehouse. Express options available on request.

Can I control multiple modules on one RS485 bus?

Yes, up to 32 modules can be connected on a single RS485 bus with unique Modbus addresses. Address configuration is via DIP switches.

What's the maximum cable length for RS485?

Standard RS485 supports up to 1200 meters with proper termination resistors. Actual distance depends on baud rate and cable quality.

Is technical support available?

Yes, full 24/7 technical support via email and WhatsApp. Our team provides integration assistance, troubleshooting, and documentation support.

What's your return policy?

7-day returns on manufacturing defects only with full refund or replacement.

Buy Waveshare Modbus RTU 8-channel Relay Module RS485 Online in India

Purchase the Waveshare Modbus RTU 8-channel Relay Module RS485 online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Waveshare Modbus RTU 8-channel Relay Module RS485 with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.

Looking to buy Waveshare Modbus RTU 8-channel Relay Module RS485 at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.