R15PL RelayBd Wiring Diagram not Available

The R15PL relay board ‘Wiring diagram’ selection will not display the wiring. See here: https://store.ncd.io/product/relay-controller-1-channel-general-purpose-spdt-8-channel-adc-proxr-lite/
Does anyone have a wiring diagram for the board? I need to better understand the ADC circuit in detail.


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