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  • 31/12/2020

    The package was delivered very soon. The product is of good quality. I will try the function as soon as possible.

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  • 04/04/2021

    Well packaged and surprisingly good delivery time, considering Spring Festival (18 calendar days from order). The MCP23017 is a great way of adding IO capability to an MCU. You use a two-wire interface to get access to two configurable 8 bit ports, giving a total of 16 additional GPIO lines. There are plenty of good tutorials online explaining how to use this module. I am happy to recommend these items.

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  • 19/01/2021

    Handy little i/o expander - I use them on a Sonoff Basic flashed with Tasmota to control all the home auto gizmos I have running....

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  • 19/07/2021

    Good price. Fast delivery.

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  • 27/03/2021

    Compliant

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  • 23/12/2020

    ok

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  • 03/11/2020

    As on the images, not tested

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  • 26/10/2020

    no problems...

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  • 26/10/2019

    Superb

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  • 12/03/2019

    Arrive very early...very good hw. Now reprogram my 8266 and just use it with my burgalar plant with 6 input and two output

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