Owner's manual

Power Options
Base Module Power Connection
Base modules are powered from a 9-30VDC source using either the DC jack or screw
terminals on the side of the unit. Sealevel offers several power supply choices to
make connection easy (see the Accessories chapter at the end of this document).
SeaI/O Expansion Power Connection
Each SeaI/O product, including the expansion modules, contains an onboard
switching regulator power supply rated for 9-30VDC. For local installations (less
than 10’ apart), expansion unit power is usually supplied from the Base unit via the
pass-through connectors. The number of expansion modules that can be driven from
the Base unit depends on the power source and number/type of expansion units.
Refer to the chart below for power requirements. For expansion modules mounted
remotely (greater than 10’ apart), separate power is required at each expansion unit.
SeaI/O Max Power Requirements
W-Series E-Series U-Series M-Series S-Series N-Series
SeaI/O-410 3.4W 2.9W 1.7W 1.4W 1.6W 1.4W
SeaI/O-420 4.0W 3.5W 2.3W 2.0W 2.2W 2.0W
SeaI/O-430 2.4W 1.9W 0.7W 0.4W 0.6W 0.4W
SeaI/O-440 4.5W 4.0W 2.8W 2.5W 2.7W 2.5W
SeaI/O-450 5.8W 5.3W 4.1W 3.8W 4.0W 3.8W
SeaI/O-470 3.5W 3.0W 1.8W 1.5W 1.7W 1.5W
SeaI/O-520 5.5W 5.0W 3.8W 3.5W 3.7W 3.5W
TTL Power Requirements
W-Series E-Series U-Series M-Series S-Series N-Series
SeaI/O-462 2.5W 2.0W 0.8W 0.5W 0.7W 0.5W
SeaI/O-463 2.5W 2.0W 0.8W 0.5W 0.7W 0.5W
© Sealevel Systems, Inc.
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SeaI/O User Manual