Owner's manual
Connector Pin Outs 
SeaI/O (RS-232) S-Series Modules 
SeaI/O S-Series (RS-232) modules have an RJ45 connector on the face of the 
enclosure. Each S-series module includes a kit (item# KT119) to convert the RJ45 
RS-232 pin out to a standard DB9 RS-232 pin out. The kit ships with a DB-9F to 
RJ45 modular adapter (item# DB109) with RS-232 pin out and a standard 7' CAT5 
patch cable (item# CA246). This kit allows SeaI/O S-series modules to be easily 
connected to a standard DB9 RS-232 serial port. For other interfacing options, the 
RJ45 serial pin out is shown below. 
NOTE: 
For SeaI/O S-series modules, pin 4 of the RJ45 connector outputs 
5VDC @300mA. This is useful for powering the wireless 
Bluetooth adapter (Sealevel Item# BT-SD100). This allows any 
Bluetooth capable host to access a SeaI/O module as easily as 
communicating with a standard RS-232 serial port. 
© Sealevel Systems, Inc. 
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SeaI/O User Manual 










