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How to control the switch using RS-232

Hi,

I'm wondering how to control switch on/off using RS-232. what i would like to control that 8 or 16 would be nice. do i need to make any expansion board ? or .. any cheapest way ? thanks in advance.

regards.

shetravel

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shetravel
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Reply to
Dave Houston

Below is a serial controller board and some relay boards.

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Reply to
Si Ballenger

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