USER GUIDE AND SPECIFICATIONS
NI USB-9481
4-Channel SPST Relay Device
This user guide describes how to use the National Instruments USB-9481
and lists the device specifications.
Introduction
The NI USB-9481 provides a USB interface for four channels of
single-pole single-throw (SPST) form A relays. The NI USB-9481 consists
of two components: an NI 9481 module and an NI USB-9162 carrier,
as shown in Figure 1.
Figure 1.
NI USB-9481 Components
NI 9481
NI USB-9162
NI USB-9481
Hi-SP
eed USB Carrie
r
NI US
B-9162
Hi-Speed USB
Carrier
NI U
SB-9162
