Elecbee 3pcs 8Channel DC 5V RS485 Modbus RTU Relay Control Module UART Switch Board PLC for Automation Smart Home

SKU: EB0045838

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Key Features

Features:

8-Channel High-Density Control: Equipped with 8 output control pins (5V TTL level, low/high output), this module enables simultaneous management of 8 devices, ideal for compact automation setups requiring multi-device coordination.
Dual Protocol & Dual Interface: Supports both AT Command and MODBUS RTU control modes, with RS485 + RS232 (TTL) dual bus interfaces for seamless integration with Serial Assistant, Modbus Poll, and other programming tools.
Scalable for Large Systems: MODBUS RTU mode allows up to 247 devices to work in parallel, making it perfect for industrial PLC automation, smart home hubs, or security systems needing extensive device networks.
6 Flexible Control Modes: Features "Open," "Close," "Momentary," "Self-Locking," "Interlock," and "Delay" commands to handle diverse scenarios—from simple on/off switching to complex logic like timed activation or device interlocking.
Ultra-Compact & Energy-Efficient: Operating on 5V DC with only 10-15mA current consumption, it measures just 45×30×15mm for space-saving installation. The 3-piece pack ensures cost-effective bulk deployment for projects of all sizes.

Specifications

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Attribute

Value

Model

RS485

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Description

Descriptions:

- Operating Voltage : DC 5V(5V Version)

- Operating Current : 10-15MA

- ''open'' ''close'' ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay'' 6 Commands

- Two instruction-control mode : AT command and MODBUS command

- Under the AT command ,the maximum delay is 9999 seconds

- Under the MODBUS command ,the maximum delay is 255 seconds

- AT commands can be made serial HyperTerminal (serial assistant) Enter;

- MODBUS commands can be made serial HyperTerminal (serial assistant) OR ''Modbus Poll'' Enter;

- Under the MODBUS command mode, it can support up to 247 devices in parallel

- With RS485 and RS232 (TTL) dual bus interface

- Output control pins 8, 5V TTL level, low level (default) / high level output

- Size: 45 x 30 x 15mm

Applications:

Automated industry PLC

Relay Module

Smart Home,Home Automation ;

Identification system;

Motor FW & BW;

CCTV Camera PTZ Control;

Security system;

LED dot matrix screen;

RS485 remote control;

3 x 8Channel DC 5V RS485 Modbus RTU Control Module UART Relay Switch

3pcs-8Channel-DC-5V-RS485-Modbus-RTU-Control-Module-UART-Relay-Switch-Board-PLC-1649653

Shopping Guide

Shipping	Delivery Period	For in-stock parts, orders are estimated to ship out in 3 days. Elecbee ships orders once a day at about 5pm except Sunday. Once shipped, estimated delivery time depends on the below carriers you chose. DHL Express: 3-7 business days DHLeCommerce: 12-22 business days FedEx International Priority: 3-7 business days EMS: 10-15 business days Registered Air Mail: 15-30 business days
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		This warranty shall not apply to any item where defects have been caused by improper customer assembly failure by customer to follow instructions, product modification, negligent or improper operation
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