Αρχική Σελίδα/Ρομποτική/Επικοινωνία/RS232 / RS485/Industrial Modbus RTU 8-Ch Relay Module (B) – RS485

Industrial Modbus RTU 8-Ch Relay Module (B) – RS485, 2 image

Industrial Modbus RTU 8-Ch Relay Module (B) – RS485, 3 image

Industrial Modbus RTU 8-Ch Relay Module (B) – RS485, 4 image

Industrial Modbus RTU 8-Ch Relay Module (B) – RS485

Κωδικός:

31-00025739

Part Number: Modbus RTU Relay (B)

ΚατασκευαστήςWaveshare Part NumberModbus RTU Relay (B)

Διαθέσιμο

Αποστολή σε 24 ώρες

€39⁹⁰

Ποσοτικές εκπτώσεις:

Ποσότητα

10+

Τιμή

€31.92

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This is an industrial 8-channel relay module controlled via an RS485 bus, utilizing the Modbus RTU protocol. It includes embedded protection features such as power isolation, magnetic isolation, and TVS diodes, among others. The module is housed in an ABS enclosure. The Modbus RTU Relay (B) is user-friendly and, due to its fast communication, stability, reliability, and safety, is an ideal choice for industrial control equipment and applications with high communication requirements.

Features at a glance

Configurable device address (1–255), multi devices can be cascaded on RS485 bus
Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically
Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
Adopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability
Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection
High quality relay, contact rating up to 10A 250VAC/30VDC
Rail-mounted ABS plastic enclosure, easy to install, safe to use
3 LEDs for indicating the MCU status and signal transceiving status

Technical data

Power supply	7V–36V
Communication interface	RS485
Baudrate	4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
Default communication format	9600, N, 8, 1
Relay channels	8
Contact form	1NO 1NC
Contact rating	≤10A 250VAC/30VDC
Communication protocol	Standard Modbus RTU protocol
RS485 address	1–255
LED indicators	STA: MCU indicator, keeps flashing when the MCU normally working TXD: TX indicator, lights up when sending data RXD: RX indicator, lights up when receiving data

Package contents

Modbus RTU Relay (B) ×1

Notes

The power supply of this product is not included, it is recommended to purchase 12V power supply if you need it (GRobotronics SKU: 31-00030622SKU copied!).
It is also recommended to purchase USB to RS232/485/TTL (GRobotronics SKU: 31-00015817SKU copied!) or USB to RS485 (GRobotronics SKU: 31-00017286SKU copied!) at the same time for easy testing.

Waveshare Industrial Modbus RTU & TCP Relay Modules - Comparison table

Model	GRobotronics SKU	Communication parameters	Relay type	Output control	Input control	Power range	Dimensions
Industrial Modbus RTU 8-Ch Relay Module – RS485	31-00017658SKU copied!	RS485 port	10A Universal Relay	8-ch	–	5V	145×90×40mm
Industrial Modbus RTU 8-Ch Relay Module (B) – RS485	31-00025739SKU copied!	RS485 port	10A Universal Relay	8-ch	–	7V–36V	175×90×40mm
Industrial Modbus RTU 8-Ch Relay Module (C) – RS485	31-00030460SKU copied!	RS485 port	10A Latching Relay	8-ch	–	7V–36V	145×90×40mm
Industrial Modbus RTU 8-Ch Relay Module (D) – RS485 & Digital Input	31-00026517SKU copied!	RS485 port	10A Universal Relay	8-ch	8-ch	7V–36V	175×90×40mm
Industrial Modbus RTU 8-Ch Relay Module (E) – RS485	31-00030459SKU copied!	RS485 port	30A High Current Relay	8-ch	–	7V–36V	200×110×60mm
Industrial Modbus RTU 4-Ch Relay Module – RS485	31-00030461SKU copied!	RS485 port	30A High Current Relay	4-ch	–	7V–36V	145×90×40mm
Industrial Modbus RTU 16-Ch Relay Module – RS485	31-00024921SKU copied!	RS485 port	10A Universal Relay	16-ch	–	5V	200×110×60mm
Industrial Modbus RTU/TCP 8-Ch Relay Module – Ethernet	31-00024964SKU copied!	Ethernet port (PoE support)	10A Universal Relay	8-ch	–	7V–36V	145×90×40mm
Industrial Modbus RTU/TCP 8-Ch Relay Module (B) – Ethernet & Digital Input	31-00027876SKU copied!	Ethernet port (PoE support)	10A Universal Relay	8-ch	8-ch	7V–36V	175×90×40mm
Industrial Modbus RTU/TCP 8-Ch Relay Module (C) – Dual Ethernet & Digital Input	31-00030544SKU copied!	Dual Ethernet ports (PoE support)	10A Universal Relay	8-ch	8-ch	7V–36V	175×90×40mm