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  • 19/08/2019

    works great :) here are the video test results https://youtu.be/JcXbF4vlbkU modbus R421A08 instruction and commands in the movie

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  • 27/06/2018

    See Github for demo app and other info: https://github.com/Erriez/R421A08-rs485-8ch-relay-board/releases TLDR: address: 40001-8, value: ON=256(0x0100), OFF=512(0x0200), TOGGLE(on 1sec)=768(0x300), LATCH=1024(0x400), MOMENT=1280(0x500), OFF_TIMER=1537-1791(0x0601-0x06FF)1-255sec

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  • 10/11/2018

    I will recommend every one who what this product. it will not disappoint you. small in size, good quality. strongly recommended.

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  • 08/12/2019

    All good, recommended!

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  • erci
    AU
    06/04/2019

    very good product

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  • 01/03/2019

    fast delivery

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  • 20/07/2018

    Works fine, just looking how to change the baudrate...

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  • 21/02/2018

    tutto ok

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  • 14/12/2017

    The product is arrived in time.

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