The SB-593 Satellite Expansion Board plugs directly onto the to provide an additional 8 general purpose inputs and 4 general purpose outputs. With a simple jumper setting, two of the inputs and two of the outputs are configured to economically manage a second door.

Note this item requires the to work. It is an expansion board to expand the amount of doors that can be controlled for the PXL-500

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Diagram

See Diagram below for the PXL- 500 with the SB-593 expansion board installed

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