Ah yes, Of cause. That is: KinCony 16 Channel Relay Board (KC868-A16)
Device 1+ 2 outputs, Devices 3 + 4 are inputs.
Inputs connected to ground to signal high/low.
Correct?
If the input is to ground than the bottom diode will be used in optocoupler. Meaning no light is emitted. So no signal transfer.
Device 1+ 2 outputs, Devices 3 + 4 are inputs.
Inputs connected to ground to signal high/low.
Correct?
If the input is to ground than the bottom diode will be used in optocoupler. Meaning no light is emitted. So no signal transfer.