Modbus RTU 4-Way Relay Module

购买 Modbus RTU 4-Way Relay Module

$71.99

Waveshare Modbus RTU 32-Ch Relay Module, RS485 Interface, With Multiple Isolation Protection Circuits, Industrial-Grade, Rail-Mount Case

Amazon.com

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$71.99

Waveshare Modbus RTU 32-Ch Relay Module, RS485 Interface, With Multiple Isolation Protection Circuits, Industrial-Grade, Rail-Mount Case

Amazon.com

$415.00

Siemens 7KM9300-0AM00-0AA0 Expansion Module MODBUS RTU RS485

PLCHardware.com

$415.00

Siemens 7KM9300-0AM00-0AA0 Expansion Module MODBUS RTU RS485

PLCHardware.com

$3.00

Modbus RTU 4CH Four Way Relay Module RS485/TTL UART 4CH IN 4CH OUT Switch Module

Alibaba B2B

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$3.00

Modbus RTU 4CH Four Way Relay Module RS485/TTL UART 4CH IN 4CH OUT Switch Module

Alibaba B2B

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$1.65

Modbus Rtu DC 7-24V Four Way 4CH Relay Module Switch Input & Output RS485 TTL Controller Anti-Reverse Connection Signal Output

Alibaba B2B

$1.65

Modbus Rtu DC 7-24V Four Way 4CH Relay Module Switch Input & Output RS485 TTL Controller Anti-Reverse Connection Signal Output

Alibaba B2B

$3.15

Stock Modbus-Rtu 4 Way RS485/TTL Relay Module Switch Development Board

Alibaba B2B

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$3.15

Stock Modbus-Rtu 4 Way RS485/TTL Relay Module Switch Development Board

Alibaba B2B

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$247.57

Contemporary Controls | MR-DO4 | Modbus RTU 4 Digital Relay Outputs With HOA Switch

Blackhawk Supply

$247.57

Contemporary Controls | MR-DO4 | Modbus RTU 4 Digital Relay Outputs With HOA Switch

Blackhawk Supply

$25.91

3X(Modbus Rtu 4 Way Relay Module 7-24V Relay Module Switch Rs485/Ttl

eBay

$25.91

3X(Modbus Rtu 4 Way Relay Module 7-24V Relay Module Switch Rs485/Ttl

eBay

$32.02

2X 2X Modbus RTU 4 Way Relay Module 7-24V Relay Module Switch RS485/TTL9028. SODIAL. Development Kits & Boards. 4711015210419.

eBay

$32.02

2X 2X Modbus RTU 4 Way Relay Module 7-24V Relay Module Switch RS485/TTL9028. SODIAL. Development Kits & Boards. 4711015210419.

eBay

$6.30

AC 220V Modbus RTU 4 Channel Relay Module Switch RS485/TTL UART Interface Four-Way Input Output DC3.3-24V

Alibaba B2B

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$6.30

AC 220V Modbus RTU 4 Channel Relay Module Switch RS485/TTL UART Interface Four-Way Input Output DC3.3-24V

Alibaba B2B

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$29.83

Rtu 4 Channel Relay Module With 485 Interface Built In Optocoupler

eBay

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$29.83

Rtu 4 Channel Relay Module With 485 Interface Built In Optocoupler

eBay

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$32.30

Aismartlink 4-Way RS485 High Current Relay Module Modbus RTU Protocol Industrial Grade With Isolation

Alibaba B2B

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$32.30

Aismartlink 4-Way RS485 High Current Relay Module Modbus RTU Protocol Industrial Grade With Isolation

Alibaba B2B

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$23.00

Huaqingjun 4-Channel RS485 Communication Relay Module 24VDC 12VDC Relays Modbus RTU DO Board For PLC

Alibaba B2B

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$23.00

Huaqingjun 4-Channel RS485 Communication Relay Module 24VDC 12VDC Relays Modbus RTU DO Board For PLC

Alibaba B2B

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$11.98

Taidacent ESP32 Modbus Rtu Relay Switch 4CH 4 Channel Wifi Relay Module RS485 Optocoupler 4 Way Wifi Relay Control Board

Alibaba B2B

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$11.98

Taidacent ESP32 Modbus Rtu Relay Switch 4CH 4 Channel Wifi Relay Module RS485 Optocoupler 4 Way Wifi Relay Control Board

Alibaba B2B

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$32.99

Industrial Modbus RTU 4-Ch Relay Module With RS485 Interface 30A High Current Onboard LED Indicators Multi Isolation Protection

Alibaba B2B

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$32.99

Industrial Modbus RTU 4-Ch Relay Module With RS485 Interface 30A High Current Onboard LED Indicators Multi Isolation Protection

Alibaba B2B

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$23.10

Modbus RTU Relay 4CH Waveshare Industrial 4-Ch Relay Module With RS485 Interface 30A High Current Onboard LED Indicators

Alibaba B2B

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$23.10

Modbus RTU Relay 4CH Waveshare Industrial 4-Ch Relay Module With RS485 Interface 30A High Current Onboard LED Indicators

Alibaba B2B

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$29.49

Weixue 4-Way RS485 High Current Relay Module Modbus RTU Protocol Industrial Grade With Isolation

Alibaba B2B

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$29.49

Weixue 4-Way RS485 High Current Relay Module Modbus RTU Protocol Industrial Grade With Isolation

Alibaba B2B

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$23.00

Huaqingjun 4-Channel RS485 Communication Relay Module Modbus RTU Remote Control DO Modules For PLC

Alibaba B2B

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$23.00

Huaqingjun 4-Channel RS485 Communication Relay Module Modbus RTU Remote Control DO Modules For PLC

Alibaba B2B

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$23.00

4 Channel RS485 Relay Output Module Modbus Rtu Do Board For PLC

Alibaba B2B

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$23.00

4 Channel RS485 Relay Output Module Modbus Rtu Do Board For PLC

Alibaba B2B

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$26.00

Huaqingjun 4-Channel RS485 232 Communication Relay Module RS485 Modbus RTU DC24V IO Module For Sensor

Alibaba B2B

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$26.00

Huaqingjun 4-Channel RS485 232 Communication Relay Module RS485 Modbus RTU DC24V IO Module For Sensor

Alibaba B2B

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$24.00

Oshangming 4 Channel Relay Output Board 12V/24V Relay Module RS485 RS232 Modbus Rtu PLC Expansion Board For LED Relay Unit

Alibaba B2B

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$24.00

Oshangming 4 Channel Relay Output Board 12V/24V Relay Module RS485 RS232 Modbus Rtu PLC Expansion Board For LED Relay Unit

Alibaba B2B

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$4.36

Modbus Rtu 1248 Relay Module Switch Inputoutput RS485TTL Communication 4Channel With Casinmodbusrtu 1248

Alibaba B2B

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$4.36

Modbus Rtu 1248 Relay Module Switch Inputoutput RS485TTL Communication 4Channel With Casinmodbusrtu 1248

Alibaba B2B

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$32.00

Industrial Modbus RTU 4-Ch Relay Module With RS485 Interface, 30A High Current, Onboard LED Indicators

Alibaba B2B

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$32.00

Industrial Modbus RTU 4-Ch Relay Module With RS485 Interface, 30A High Current, Onboard LED Indicators

Alibaba B2B

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$16.80

4-Channel Modbus TCP RS232 RS485 Ethernet Digital Input 4 Relay Output Modbus RTU Data Acquisition IO Module Relay Controller

Alibaba B2B

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$16.80

4-Channel Modbus TCP RS232 RS485 Ethernet Digital Input 4 Relay Output Modbus RTU Data Acquisition IO Module Relay Controller

Alibaba B2B

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$3.04

Modbus Rtu 1248 Relay Module Switch Inputoutput RS485TTL Communication 4Channelmodbusrtu 1248

Alibaba B2B

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$3.04

Modbus Rtu 1248 Relay Module Switch Inputoutput RS485TTL Communication 4Channelmodbusrtu 1248

Alibaba B2B

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$46.00

4-Relay Input Analog RTU Modbus Gateway RS485 LAN Converter Wireless & RF Modules Serial To Serial & LAN

Alibaba B2B

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$46.00

4-Relay Input Analog RTU Modbus Gateway RS485 LAN Converter Wireless & RF Modules Serial To Serial & LAN

Alibaba B2B

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$4.80

CE040 DC 12V 4 CH RS485 Relay Module Modbus RTU And AT Command Remote Control Switch For PLC PTZ Camera Security Monitoring

Alibaba B2B

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$4.80

CE040 DC 12V 4 CH RS485 Relay Module Modbus RTU And AT Command Remote Control Switch For PLC PTZ Camera Security Monitoring

Alibaba B2B

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$30.00

Oshangming 4 Input 4 Relay Output Module 4Di 4Do Board RS485 Lan Modbus RTU TCP 12V/24V For PLC

Alibaba B2B

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$30.00

Oshangming 4 Input 4 Relay Output Module 4Di 4Do Board RS485 Lan Modbus RTU TCP 12V/24V For PLC

Alibaba B2B

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$23.00

Huaqingjun 4-Channel RS485 Communication Relay Module Remote Control Modbus RTU For Telecommunication

Alibaba B2B

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$23.00

Huaqingjun 4-Channel RS485 Communication Relay Module Remote Control Modbus RTU For Telecommunication

Alibaba B2B

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$44.00

Modbus RTU I/O Remote Module 8DI 4DO Relay With RS485 Port For PLC Industrial Aotumation(A-1060)

Alibaba B2B

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$44.00

Modbus RTU I/O Remote Module 8DI 4DO Relay With RS485 Port For PLC Industrial Aotumation(A-1060)

Alibaba B2B

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$27.00

4 Channel RS485 Lan Relay Output Module Do Board Modbus RTU TCP For PLC

Alibaba B2B

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$27.00

4 Channel RS485 Lan Relay Output Module Do Board Modbus RTU TCP For PLC

Alibaba B2B

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$46.43

Waveshare Industrial Modbus RTU 4-Ch Relay Module With RS485 Interface, 30A. Waveshare. Motherboards.

eBay

$46.43

Waveshare Industrial Modbus RTU 4-Ch Relay Module With RS485 Interface, 30A. Waveshare. Motherboards.

eBay

$14.42

1PCS Modbus-Rtu 1/2/4/8 Relay Switch Input/Output RS485/TTL Communication YT. RS485. Chipsets.

eBay

$14.42

1PCS Modbus-Rtu 1/2/4/8 Relay Switch Input/Output RS485/TTL Communication YT. RS485. Chipsets.

eBay

$30.32

5X( 4-20Ma Voltage Acquisition Rs485 Modbus Rtu Module For Plc

eBay

$30.32

5X( 4-20Ma Voltage Acquisition Rs485 Modbus Rtu Module For Plc

eBay

$25.00

MODBUS RTU 4G Industrial Remote IO Module With 4DI 4DO MQTT Protocol For Communication & Networking Product

Alibaba B2B

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$25.00

MODBUS RTU 4G Industrial Remote IO Module With 4DI 4DO MQTT Protocol For Communication & Networking Product

Alibaba B2B

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$45.00

High Accuracy 4 Channel AO Module 0-10V 4-20Ma Output Modbus RTU For PLC Automation Control By Taihua Instrument Model TD-4024

Alibaba B2B

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$45.00

High Accuracy 4 Channel AO Module 0-10V 4-20Ma Output Modbus RTU For PLC Automation Control By Taihua Instrument Model TD-4024

Alibaba B2B

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$299.00

GW MODBUS TCP/RTU 1E/1DB9 PHOENIX CONTACT - Sensors & Switches & Interbus Module & Hub Supplies

Radwell.com

$299.00

GW MODBUS TCP/RTU 1E/1DB9 PHOENIX CONTACT - Sensors & Switches & Interbus Module & Hub Supplies

Radwell.com

8:58

YouTubeRealPars

What is Modbus and How does it Work?

Want to learn industrial automation? Go here: http://realpars.com Want to train your team in industrial automation? Go here: http://realpars.com/business Check out the full blog post over at https://realpars.com/modbus/ ========================== The Modbus communication protocol is the oldest and by far the most popular automation protocol in ...

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Modbus Tutorial