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© Sealevel Systems, Inc.
SeaI/O | SL9049 11/2021
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
Sample Power Calculation
A typical application for SeaI/O products would use one Base module and several N-series units in a local
expansion configuration. In this arrangement, with power applied to the Base module through either the DC jack
or screw terminal connector and passed-through to the expansion units, attention should be given to ensure the
input power to the Base module is adequate.
Example
Power (W)
Base Unit
SeaI/O-430U
0.7
Expansion 1
SeaI/O-410N
1.4
Expansion 2
SeaI/O-440N
2.5
4.6W Power Required
In this application, Sealevel’s Part# TR112
“wall wart” power supply is a good choice since it is low
-cost and
supplies 24VDC @ 250mA (6W).
A complete listing of recommended power supplies is provided in the Accessories section of this
manual.