Industrial Modbus RTU 8-ch Relay Module with RS485 Interface

Industrial Modbus RTU 8-ch Relay Module with RS485 Interface

Marsoni

M251S

$59.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Industrial Modbus RTU 8-ch Relay Module with RS485 InterfaceIndustrial Modbus RTU 8 ch Relay Module with RS485 Interface Industrial Modbus RTU 8 Ch Relay Module (B) With RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply Features: 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, TVS diode, etc. It also comes with an ABS enclosure. The Modbus RTU Relay (B)

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This USB3.1 gen 2 hub is well made, featuring VIA Labs controller (device id 2109:2822) and is made in China. It looks nice and performs according to the specs. I wish usb-c socket supported TB3/Alt DP cable to connect a display to it, but it is apparently made mainly for power delivery. I think the hub is a good value.

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Reviewed in the United States on November 21, 2025

Verified Purchase

David Row

Fort Morgan, US

★★★★★ 5

Do you need a powered hub instead?

NOT powered. My bad, I didn't look closely enough. I need a powered hub.

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Reviewed in the United States on March 7, 2026

Verified Purchase

AMAZON CUSTOMER

Lexington, US

★★★★★ 5

plug and play ...fast ...hi performance... same as higher price

plug and play ...fast ...hi performance... same as higher price

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Reviewed in the United States on March 16, 2026

Verified Purchase

H. T.

Carnegie, US

★★★★★ 5

premium feel in the hand.

Can't really say whether it's that good or not elecronics wise since I didn't test it but it works like it's supposed to. Meanwhile, the housing oh man. It's premium. It feels like hard aluminum or something, very nice. Edges are rounded too with just the right sharpness like a macbook. Others would've been plastic. This is really nice for the price and if the specs really are 10Gbps, that's really good because most in this price range is 5Gbps.

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Reviewed in the United States on March 2, 2026