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Then you can setup the Dry/Wet contact in left switch :
As no contact with the Input ,
Switch set as ON : LED light ON & means the input is Dry contact ,
Switch set as OFF : LED light is OFF which means the input is Wet contact
For example: the left switch setup input 1~4 is OFF & 5-8 is ON.
So the input 1- 4 is DRY contact and LED light OFF
the input 5- 8 is WET contact and LED light ON
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