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Continue to ChatBVM 32 Bit Opto-isolated digital I/O PMC module https://www.bvm.co.uk/products/229-32-bit-opto-isolated-digital-i-o-pmc-module-pmcdio32/
BVM 32 Bit Opto-isolated digital I/O PMC module https://www.bvm.co.uk/products/229-32-bit-opto-isolated-digital-i-o-pmc-module-pmcdio32/