User Manual User Manual
© Sealevel Systems, Inc. 
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SEALINK REL-16 User Manual
Introduction 
The SeaLINK REL-16 provides 16 reed relays that can latch power, data or other 
electronic signals for control applications. The adapter is USB 1.1 compliant. 
The SEALINK REL-16 is designed to be used under Windows 98/ME/2000/XP. 
The SeaI/O API (Application Programmer Interface) included on CD with the 
SEALINK REL-16 provides a variety of useful high-level function calls 
implemented in a Windows dynamic link library (DLL). This API gives access to 
the SeaLINK REL-16 I/O from Windows-based platforms such as Visual C++. In 
addition to the API, SeaI/O includes an ActiveX control along with sample code and 
utilities to simplify software development. 
Other Sealevel USB Digital I/O Products 
SeaLINK PLC-16  (P/N 8206)  - 8 Form C Relays/8 Opto-isolated Inputs 
SeaLINK DIO-16  (P/N 8209)  - 8 Reed Relays/8 Opto-isolated Inputs 
SeaLINK ISO-16  (P/N 8207)  - 16 Opto-isolated Inputs 
SeaLINK PIO-48  (P/N 8203)  - 48 TTL Inputs/Outputs 
SeaLINK PIO-96  (P/N 8205)  - 96 TTL Inputs/Outputs 










