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Can I use the OPTO-4 when the RS232 port does not provide power on the handshaking lines? Is the OPTO-4 a direct replacement for the PC-OPTO-3?

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  • Can I use the OPTO-4 when the RS232 port does not provide power on the handshaking lines? Is the OPTO-4 a direct replacement for the PC-OPTO-3?
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Yes, but you will need to provide power to the 9 pin connector (DB9) independently. Instructions for this are explained in the Quick Start Guide on the OPTO-4 downloads page.

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