What are the jumpers on the ADC-ACX1 for?
J3
The J3 jumper is used for the expansion tamper. If the jumper is not attached with the black and white wire harness, the expansion module will show a tamper.
J4
The J4 jumper is the end of line termination jumper. It should only be installed if the expansion is the last in the chain of expansions connected to a controller.
