Modul 817 optocoupler isolated 2 channel

parts help
1

need help library for c
LINK

2-channel-817-optocoupler-2-way-voltage-isolation-board-voltage-control-adapter-module2
2-channel-817-optocoupler-2-way-voltage-isolation-board-voltage-control-adapter-module21000×1000 63.4 KB

2

Found this topic by chance (thanks to boredom)

@polem69 Please attach the website of the part that documents dimensions, connector information and a flat top view image of the part