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© Sealevel Systems, Inc.
SeaI/O | SL9049 11/2021
I/O Wiring
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SeaI/O-580 Modules
The 580E/580PoE optically isolated dry-contact inputs are arranged such that each input has a dedicated
common terminal. The Common terminals are all connected to one isolated ground on board. Each dry contact
(no-voltage) input detects a contact closure between two externally wired connections. Four (4) input/common
pairs are connected via an eight-position removable screw terminal connector, and there are eight (8)
connectors for a total of 32 inputs.