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Usb-4750 Digital I/o Usb Module With 32-channel Isolation Protection - Industrial Computer & Accessories - AliExpress
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Advantech - USB-4750-BE - USB IO, 16 Ch Digital In/Out, 2500 VDC ISO, USB 1.1/2.0 , adsb2, USB-4700 Series - RS
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Advantech - USB-4761-BE - USB IO, 16 Ch Digital In, Relay Out, 2500 VDC ISO, adsb2, USB-4700 Series - RS
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