Industrial Modbus RTU 8-ch Relay Module with RS485 Interface

SKU: WS-25739 Brand: Waveshare

Industrial Modbus RTU 8-ch Relay Module with RS485 Interface, Multi Isolation Protection Circuits, 5V Power Supply...

$53.20 AUD, inc GST

$48.36 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Fastest delivery: Tomorrow* Disclaimer:
For next-day delivery, the shipping address must be in the AusPost next-day network, eParcel Express must be selected, and the order must be placed before 2PM AEST Mon-Thurs excluding NSW Public Holidays. Orders may be delayed due to AusPost pickup timings and order verifications. eParcel Express is typically a 1-day service within the AusPost next-day network, though it is sometimes 2+ days.

Quantity Discounts:

6+ $46.91 (exc GST)
12+ $45.95 (exc GST)

Industrial Modbus RTU 8-ch Relay Module (B) with RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply RS485 8-ch Relay Module (B)

Modbus RTU Protocol, Multi Isolation Protection Circuits, Safe & Stable & Reliable

Features At A Glance

This is an industrial 8-ch relay module controlled via RS485 bus, utilizing Modbus RTU protocol. It features embedded protection circuits such as power isolation, magnetical isolation, and TVS diode, etc. It also comes with an ABS enclosure. The Modbus RTU Relay (B) is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipments and/or applications with high communication requirement.

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: =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

Specifications

PRODUCT	Modbus RTU Relay
Power supply	5V
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

Hardware Analysis

Multiple protections for safer and more reliable use

Enclosure Design

Rail-mounted ABS plastic enclosure, easy to install, safe to use

RS485 Communication

Configurable device address (1~255), multi devices can be cascaded on RS485 bus

In case of many devices are cascaded, or communication distance is quite long, it is necessary to use RS485 repeaters

for reference only, the USB TO RS232/485/TTL converter is Not included

Relay connection

Contact rating of the onboard relay up to 10A 250VAC/30VDC
Directly controlling 220VAC home appliances, or devices below 30VDC

Applications

Product show

Outline dimensions

Documents

WIKI

This product is listed in:

Breakouts & Modules>RS485

Product Comments

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Unit 18, 132 Garden Grove Parade
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